97139 has 4 divisors (see below), whose sum is σ = 111024. Its totient is φ = 83256.

The previous prime is 97127. The next prime is 97151. The reversal of 97139 is 93179.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (97127) and next prime (97151).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97159) 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, 6932 + ... + 6945.

It is an arithmetic number, because the mean of its divisors is an integer number (27756).

2⁹⁷¹³⁹ is an apocalyptic number.

97139 is a deficient number, since it is larger than the sum of its proper divisors (13885).

97139 is a wasteful number, since it uses less digits than its factorization.

97139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13884.

The product of its digits is 1701, while the sum is 29.

The square root of 97139 is about 311.6713012133. The cubic root of 97139 is about 45.9689456437.

The spelling of 97139 in words is "ninety-seven thousand, one hundred thirty-nine".