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2389393 = 19912007
BaseRepresentation
bin1001000111010110010001
311111101122001
421013112101
51102430033
6123114001
726211106
oct11072621
94441561
102389393
111392206
12972901
13658756
14462aad
15322e7d
hex247591

2389393 has 4 divisors (see below), whose sum is σ = 2401600. Its totient is φ = 2377188.

The previous prime is 2389391. The next prime is 2389403. The reversal of 2389393 is 3939832.

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 not a de Polignac number, because 2389393 - 21 = 2389391 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2389391) 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, 5805 + ... + 6202.

It is an arithmetic number, because the mean of its divisors is an integer number (600400).

22389393 is an apocalyptic number.

It is an amenable number.

2389393 is a deficient number, since it is larger than the sum of its proper divisors (12207).

2389393 is a wasteful number, since it uses less digits than its factorization.

2389393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12206.

The product of its digits is 34992, while the sum is 37.

The square root of 2389393 is about 1545.7661530775. The cubic root of 2389393 is about 133.6890577460.

The spelling of 2389393 in words is "two million, three hundred eighty-nine thousand, three hundred ninety-three".

Divisors: 1 199 12007 2389393