97426139 has 2 divisors, whose sum is σ = 97426140. Its totient is φ = 97426138.

The previous prime is 97426123. The next prime is 97426157. The reversal of 97426139 is 93162479.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 97426139 - 2⁴ = 97426123 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 97426096 and 97426105.

It is not a weakly prime, because it can be changed into another prime (97426339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48713069 + 48713070.

It is an arithmetic number, because the mean of its divisors is an integer number (48713070).

Almost surely, 2^97426139 is an apocalyptic number.

97426139 is a deficient number, since it is larger than the sum of its proper divisors (1).

97426139 is an equidigital number, since it uses as much as digits as its factorization.

97426139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 41.

The square root of 97426139 is about 9870.4680233513. The cubic root of 97426139 is about 460.1419520945.

The spelling of 97426139 in words is "ninety-seven million, four hundred twenty-six thousand, one hundred thirty-nine".