99971022 has 16 divisors (see below), whose sum is σ = 200576592. Its totient is φ = 33217920.

The previous prime is 99971017. The next prime is 99971023. The reversal of 99971022 is 22017999.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99971023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24379 + ... + 28182.

It is an arithmetic number, because the mean of its divisors is an integer number (12536037).

Almost surely, 2^99971022 is an apocalyptic number.

99971022 is an abundant number, since it is smaller than the sum of its proper divisors (100605570).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99971022 is a wasteful number, since it uses less digits than its factorization.

99971022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52883.

The product of its (nonzero) digits is 20412, while the sum is 39.

The square root of 99971022 is about 9998.5509950192. The cubic root of 99971022 is about 464.1140443761.

The spelling of 99971022 in words is "ninety-nine million, nine hundred seventy-one thousand, twenty-two".