45908639 has 6 divisors (see below), whose sum is σ = 53403984. Its totient is φ = 39350220.

The previous prime is 45908593. The next prime is 45908647. The reversal of 45908639 is 93680954.

It is not a de Polignac number, because 45908639 - 2⁸ = 45908383 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 45908639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45908669) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 468407 + ... + 468504.

It is an arithmetic number, because the mean of its divisors is an integer number (8900664).

Almost surely, 2^45908639 is an apocalyptic number.

45908639 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

45908639 is a deficient number, since it is larger than the sum of its proper divisors (7495345).

45908639 is an equidigital number, since it uses as much as digits as its factorization.

45908639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 936925 (or 936918 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 44.

The square root of 45908639 is about 6775.5914133011. The cubic root of 45908639 is about 358.0674191349.

The spelling of 45908639 in words is "forty-five million, nine hundred eight thousand, six hundred thirty-nine".