45908139 has 4 divisors (see below), whose sum is σ = 61210856. Its totient is φ = 30605424.

The previous prime is 45908113. The next prime is 45908197. The reversal of 45908139 is 93180954.

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

It is not a de Polignac number, because 45908139 - 2⁷ = 45908011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 45908097 and 45908106.

It is not an unprimeable number, because it can be changed into a prime (45908039) 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, 7651354 + ... + 7651359.

It is an arithmetic number, because the mean of its divisors is an integer number (15302714).

Almost surely, 2^45908139 is an apocalyptic number.

45908139 is a deficient number, since it is larger than the sum of its proper divisors (15302717).

45908139 is a wasteful number, since it uses less digits than its factorization.

45908139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15302716.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 45908139 is about 6775.5545160525. The cubic root of 45908139 is about 358.0661192026.

The spelling of 45908139 in words is "forty-five million, nine hundred eight thousand, one hundred thirty-nine".