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4472839 = 7638977
BaseRepresentation
bin10001000100000000000111
322102020120201
4101010000013
52121112324
6235511331
753006230
oct21040007
98366521
104472839
112585568
1215b8547
13c07b67
14846087
155d5444
hex444007

4472839 has 4 divisors (see below), whose sum is σ = 5111824. Its totient is φ = 3833856.

The previous prime is 4472827. The next prime is 4472851. The reversal of 4472839 is 9382744.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (4472827) and next prime (4472851).

It is a cyclic number.

It is not a de Polignac number, because 4472839 - 25 = 4472807 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4472798 and 4472807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4472869) 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, 319482 + ... + 319495.

It is an arithmetic number, because the mean of its divisors is an integer number (1277956).

Almost surely, 24472839 is an apocalyptic number.

4472839 is a deficient number, since it is larger than the sum of its proper divisors (638985).

4472839 is an equidigital number, since it uses as much as digits as its factorization.

4472839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638984.

The product of its digits is 48384, while the sum is 37.

The square root of 4472839 is about 2114.9087450763. The cubic root of 4472839 is about 164.7635302583.

The spelling of 4472839 in words is "four million, four hundred seventy-two thousand, eight hundred thirty-nine".

Divisors: 1 7 638977 4472839