45648939 has 24 divisors (see below), whose sum is σ = 71213520. Its totient is φ = 25933824.

The previous prime is 45648937. The next prime is 45648943. The reversal of 45648939 is 93984654.

It is not a de Polignac number, because 45648939 - 2¹ = 45648937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45648931) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27567 + ... + 29175.

It is an arithmetic number, because the mean of its divisors is an integer number (2967230).

Almost surely, 2^45648939 is an apocalyptic number.

45648939 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

45648939 is a deficient number, since it is larger than the sum of its proper divisors (25564581).

45648939 is a wasteful number, since it uses less digits than its factorization.

45648939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1819 (or 1812 counting only the distinct ones).

The product of its digits is 933120, while the sum is 48.

The square root of 45648939 is about 6756.3998549523. The cubic root of 45648939 is about 357.3909596218.

The spelling of 45648939 in words is "forty-five million, six hundred forty-eight thousand, nine hundred thirty-nine".