97299139 has 4 divisors (see below), whose sum is σ = 111199024. Its totient is φ = 83399256.

The previous prime is 97299127. The next prime is 97299187. The reversal of 97299139 is 93199279.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93199279 = 241 ⋅386719.

It is a cyclic number.

It is not a de Polignac number, because 97299139 - 2⁵ = 97299107 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 97299092 and 97299101.

It is not an unprimeable number, because it can be changed into a prime (97299199) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6949932 + ... + 6949945.

It is an arithmetic number, because the mean of its divisors is an integer number (27799756).

Almost surely, 2^97299139 is an apocalyptic number.

97299139 is a deficient number, since it is larger than the sum of its proper divisors (13899885).

97299139 is a wasteful number, since it uses less digits than its factorization.

97299139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13899884.

The product of its digits is 275562, while the sum is 49.

The square root of 97299139 is about 9864.0325932146. The cubic root of 97299139 is about 459.9419255607.

The spelling of 97299139 in words is "ninety-seven million, two hundred ninety-nine thousand, one hundred thirty-nine".