97696139 has 2 divisors, whose sum is σ = 97696140. Its totient is φ = 97696138.

The previous prime is 97696121. The next prime is 97696141. The reversal of 97696139 is 93169679.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 97696139 - 2⁸ = 97695883 is a prime.

Together with 97696141, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (97696199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48848069 + 48848070.

It is an arithmetic number, because the mean of its divisors is an integer number (48848070).

Almost surely, 2^97696139 is an apocalyptic number.

97696139 is a deficient number, since it is larger than the sum of its proper divisors (1).

97696139 is an equidigital number, since it uses as much as digits as its factorization.

97696139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 551124, while the sum is 50.

The square root of 97696139 is about 9884.1357234712. The cubic root of 97696139 is about 460.5666284570.

The spelling of 97696139 in words is "ninety-seven million, six hundred ninety-six thousand, one hundred thirty-nine".