92139391 has 2 divisors, whose sum is σ = 92139392. Its totient is φ = 92139390.

The previous prime is 92139373. The next prime is 92139401. The reversal of 92139391 is 19393129.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 92139391 - 2¹³ = 92131199 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 92139391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (92139301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 46069695 + 46069696.

It is an arithmetic number, because the mean of its divisors is an integer number (46069696).

Almost surely, 2^92139391 is an apocalyptic number.

92139391 is a deficient number, since it is larger than the sum of its proper divisors (1).

92139391 is an equidigital number, since it uses as much as digits as its factorization.

92139391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13122, while the sum is 37.

The square root of 92139391 is about 9598.9265545685. The cubic root of 92139391 is about 451.6636215411.

The spelling of 92139391 in words is "ninety-two million, one hundred thirty-nine thousand, three hundred ninety-one".