45139867 has 2 divisors, whose sum is σ = 45139868. Its totient is φ = 45139866.

The previous prime is 45139819. The next prime is 45139909. The reversal of 45139867 is 76893154.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 45139867 - 2⁷ = 45139739 is a prime.

It is not a weakly prime, because it can be changed into another prime (45139067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22569933 + 22569934.

It is an arithmetic number, because the mean of its divisors is an integer number (22569934).

Almost surely, 2^45139867 is an apocalyptic number.

45139867 is a deficient number, since it is larger than the sum of its proper divisors (1).

45139867 is an equidigital number, since it uses as much as digits as its factorization.

45139867 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 43.

The square root of 45139867 is about 6718.6209150390. The cubic root of 45139867 is about 356.0574618983.

The spelling of 45139867 in words is "forty-five million, one hundred thirty-nine thousand, eight hundred sixty-seven".