45139792 has 20 divisors (see below), whose sum is σ = 87908436. Its totient is φ = 22453760.

The previous prime is 45139781. The next prime is 45139819. The reversal of 45139792 is 29793154.

It can be written as a sum of positive squares in 2 ways, for example, as 21752896 + 23386896 = 4664^2 + 4836^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4009 + ... + 10312.

Almost surely, 2^45139792 is an apocalyptic number.

It is an amenable number.

45139792 is a deficient number, since it is larger than the sum of its proper divisors (42768644).

45139792 is a wasteful number, since it uses less digits than its factorization.

45139792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14526 (or 14520 counting only the distinct ones).

The product of its digits is 68040, while the sum is 40.

The square root of 45139792 is about 6718.6153335341. The cubic root of 45139792 is about 356.0572647014.

The spelling of 45139792 in words is "forty-five million, one hundred thirty-nine thousand, seven hundred ninety-two".