39139057 has 2 divisors, whose sum is σ = 39139058. Its totient is φ = 39139056.

The previous prime is 39139027. The next prime is 39139063. The reversal of 39139057 is 75093193.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39137536 + 1521 = 6256^2 + 39^2 .

It is a cyclic number.

It is not a de Polignac number, because 39139057 - 2¹⁵ = 39106289 is a prime.

It is not a weakly prime, because it can be changed into another prime (39139027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19569528 + 19569529.

It is an arithmetic number, because the mean of its divisors is an integer number (19569529).

Almost surely, 2^39139057 is an apocalyptic number.

It is an amenable number.

39139057 is a deficient number, since it is larger than the sum of its proper divisors (1).

39139057 is an equidigital number, since it uses as much as digits as its factorization.

39139057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25515, while the sum is 37.

The square root of 39139057 is about 6256.1215621182. The cubic root of 39139057 is about 339.5237189375.

The spelling of 39139057 in words is "thirty-nine million, one hundred thirty-nine thousand, fifty-seven".