99985974 has 32 divisors (see below), whose sum is σ = 225192960. Its totient is φ = 29320800.

The previous prime is 99985973. The next prime is 99985987. The reversal of 99985974 is 47958999.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99985973) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22389 + ... + 26480.

It is an arithmetic number, because the mean of its divisors is an integer number (7037280).

Almost surely, 2^99985974 is an apocalyptic number.

99985974 is an abundant number, since it is smaller than the sum of its proper divisors (125206986).

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

99985974 is a wasteful number, since it uses less digits than its factorization.

99985974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48916.

The product of its digits is 7348320, while the sum is 60.

The square root of 99985974 is about 9999.2986754072. The cubic root of 99985974 is about 464.1371813716.

The spelling of 99985974 in words is "ninety-nine million, nine hundred eighty-five thousand, nine hundred seventy-four".