97211279 has 6 divisors (see below), whose sum is σ = 106852200. Its totient is φ = 88373780.

The previous prime is 97211269. The next prime is 97211293.

97211279 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 97211279 - 2⁴ = 97211263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97211249) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 401579 + ... + 401820.

It is an arithmetic number, because the mean of its divisors is an integer number (17808700).

Almost surely, 2^97211279 is an apocalyptic number.

97211279 is a deficient number, since it is larger than the sum of its proper divisors (9640921).

97211279 is a wasteful number, since it uses less digits than its factorization.

97211279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 803421 (or 803410 counting only the distinct ones).

The product of its digits is 15876, while the sum is 38.

The square root of 97211279 is about 9859.5780335672. The cubic root of 97211279 is about 459.8034431188.

The spelling of 97211279 in words is "ninety-seven million, two hundred eleven thousand, two hundred seventy-nine".