97871739 has 32 divisors (see below), whose sum is σ = 157301760. Its totient is φ = 52918272.

The previous prime is 97871713. The next prime is 97871777. The reversal of 97871739 is 93717879.

It is a happy number.

It is not a de Polignac number, because 97871739 - 2¹⁵ = 97838971 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 97871691 and 97871700.

It is not an unprimeable number, because it can be changed into a prime (97871779) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45807 + ... + 47895.

It is an arithmetic number, because the mean of its divisors is an integer number (4915680).

Almost surely, 2^97871739 is an apocalyptic number.

97871739 is a deficient number, since it is larger than the sum of its proper divisors (59430021).

97871739 is a wasteful number, since it uses less digits than its factorization.

97871739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2219.

The product of its digits is 666792, while the sum is 51.

The square root of 97871739 is about 9893.0146568172. The cubic root of 97871739 is about 460.8424056223.

The spelling of 97871739 in words is "ninety-seven million, eight hundred seventy-one thousand, seven hundred thirty-nine".