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14861989 = 31479419
BaseRepresentation
bin111000101100…
…011010100101
31000222001211001
4320230122211
512301040424
61250313301
7240216262
oct70543245
930861731
1014861989
11843103a
124b88831
13310489c
141d8c269
151488844
hexe2c6a5

14861989 has 4 divisors (see below), whose sum is σ = 15341440. Its totient is φ = 14382540.

The previous prime is 14861983. The next prime is 14861993. The reversal of 14861989 is 98916841.

14861989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-14861989 is a prime.

It is a super-2 number, since 2×148619892 = 441757434072242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14861983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239679 + ... + 239740.

It is an arithmetic number, because the mean of its divisors is an integer number (3835360).

Almost surely, 214861989 is an apocalyptic number.

It is an amenable number.

14861989 is a deficient number, since it is larger than the sum of its proper divisors (479451).

14861989 is an equidigital number, since it uses as much as digits as its factorization.

14861989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479450.

The product of its digits is 124416, while the sum is 46.

The square root of 14861989 is about 3855.1250303978. The cubic root of 14861989 is about 245.8625104761.

The spelling of 14861989 in words is "fourteen million, eight hundred sixty-one thousand, nine hundred eighty-nine".

Divisors: 1 31 479419 14861989