39522139 has 2 divisors, whose sum is σ = 39522140. Its totient is φ = 39522138.

The previous prime is 39522113. The next prime is 39522149. The reversal of 39522139 is 93122593.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39522139 is a prime.

It is a super-2 number, since 2×39522139² = 3123998942270642, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (39522149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19761069 + 19761070.

It is an arithmetic number, because the mean of its divisors is an integer number (19761070).

Almost surely, 2^39522139 is an apocalyptic number.

39522139 is a deficient number, since it is larger than the sum of its proper divisors (1).

39522139 is an equidigital number, since it uses as much as digits as its factorization.

39522139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14580, while the sum is 34.

The square root of 39522139 is about 6286.6635825372. The cubic root of 39522139 is about 340.6278450959.

The spelling of 39522139 in words is "thirty-nine million, five hundred twenty-two thousand, one hundred thirty-nine".