99989974 has 8 divisors (see below), whose sum is σ = 171411408. Its totient is φ = 42852840.

The previous prime is 99989963. The next prime is 99989983. The reversal of 99989974 is 47998999.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3571057 + ... + 3571084.

It is an arithmetic number, because the mean of its divisors is an integer number (21426426).

Almost surely, 2^99989974 is an apocalyptic number.

99989974 is a deficient number, since it is larger than the sum of its proper divisors (71421434).

99989974 is a wasteful number, since it uses less digits than its factorization.

99989974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7142150.

The product of its digits is 13226976, while the sum is 64.

The square root of 99989974 is about 9999.4986874343. The cubic root of 99989974 is about 464.1433706529.

The spelling of 99989974 in words is "ninety-nine million, nine hundred eighty-nine thousand, nine hundred seventy-four".