97891299 has 18 divisors (see below), whose sum is σ = 155423268. Its totient is φ = 59327400.

The previous prime is 97891267. The next prime is 97891331. The reversal of 97891299 is 99219879.

It is an interprime number because it is at equal distance from previous prime (97891267) and next prime (97891331).

It is not a de Polignac number, because 97891299 - 2⁵ = 97891267 is a prime.

It is not an unprimeable number, because it can be changed into a prime (97891259) 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 17 ways as a sum of consecutive naturals, for example, 43857 + ... + 46034.

It is an arithmetic number, because the mean of its divisors is an integer number (8634626).

Almost surely, 2^97891299 is an apocalyptic number.

97891299 is a gapful number since it is divisible by the number (99) formed by its first and last digit.

97891299 is a deficient number, since it is larger than the sum of its proper divisors (57531969).

97891299 is a wasteful number, since it uses less digits than its factorization.

97891299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89919 (or 89905 counting only the distinct ones).

The product of its digits is 734832, while the sum is 54.

The square root of 97891299 is about 9894.0031837472. The cubic root of 97891299 is about 460.8731038848.

The spelling of 97891299 in words is "ninety-seven million, eight hundred ninety-one thousand, two hundred ninety-nine".