97129879 has 8 divisors (see below), whose sum is σ = 121097088. Its totient is φ = 75685560.

The previous prime is 97129829. The next prime is 97129889. The reversal of 97129879 is 97892179.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 97129879 - 2¹⁵ = 97097111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97129829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 630637 + ... + 630790.

It is an arithmetic number, because the mean of its divisors is an integer number (15137136).

Almost surely, 2^97129879 is an apocalyptic number.

97129879 is a deficient number, since it is larger than the sum of its proper divisors (23967209).

97129879 is a wasteful number, since it uses less digits than its factorization.

97129879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1261445.

The product of its digits is 571536, while the sum is 52.

The square root of 97129879 is about 9855.4492033595. The cubic root of 97129879 is about 459.6750682625.

It can be divided in two parts, 9712 and 9879, that added together give a palindrome (19591).

The spelling of 97129879 in words is "ninety-seven million, one hundred twenty-nine thousand, eight hundred seventy-nine".