39149542387 has 2 divisors, whose sum is σ = 39149542388. Its totient is φ = 39149542386.

The previous prime is 39149542357. The next prime is 39149542441. The reversal of 39149542387 is 78324594193.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 39149542387 - 2²⁷ = 39015324659 is a prime.

It is a super-2 number, since 2×39149542387² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (39149542357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19574771193 + 19574771194.

It is an arithmetic number, because the mean of its divisors is an integer number (19574771194).

Almost surely, 2^39149542387 is an apocalyptic number.

39149542387 is a deficient number, since it is larger than the sum of its proper divisors (1).

39149542387 is an equidigital number, since it uses as much as digits as its factorization.

39149542387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6531840, while the sum is 55.

The spelling of 39149542387 in words is "thirty-nine billion, one hundred forty-nine million, five hundred forty-two thousand, three hundred eighty-seven".