97238791 has 16 divisors (see below), whose sum is σ = 106580320. Its totient is φ = 88179840.

The previous prime is 97238773. The next prime is 97238807. The reversal of 97238791 is 19783279.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 97238791 - 2⁷ = 97238663 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 (97238761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 230761 + ... + 231181.

It is an arithmetic number, because the mean of its divisors is an integer number (6661270).

Almost surely, 2^97238791 is an apocalyptic number.

97238791 is a deficient number, since it is larger than the sum of its proper divisors (9341529).

97238791 is a wasteful number, since it uses less digits than its factorization.

97238791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706.

The product of its digits is 190512, while the sum is 46.

The square root of 97238791 is about 9860.9731264211. The cubic root of 97238791 is about 459.8468157236.

The spelling of 97238791 in words is "ninety-seven million, two hundred thirty-eight thousand, seven hundred ninety-one".