97111139 has 2 divisors, whose sum is σ = 97111140. Its totient is φ = 97111138.

The previous prime is 97111121. The next prime is 97111141. The reversal of 97111139 is 93111179.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97111139 is a prime.

It is a Sophie Germain prime.

Together with 97111141, 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 (97111039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48555569 + 48555570.

It is an arithmetic number, because the mean of its divisors is an integer number (48555570).

Almost surely, 2^97111139 is an apocalyptic number.

97111139 is a deficient number, since it is larger than the sum of its proper divisors (1).

97111139 is an equidigital number, since it uses as much as digits as its factorization.

97111139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1701, while the sum is 32.

The square root of 97111139 is about 9854.4984144298. The cubic root of 97111139 is about 459.6455035019.

The spelling of 97111139 in words is "ninety-seven million, one hundred eleven thousand, one hundred thirty-nine".