99989758 has 16 divisors (see below), whose sum is σ = 164540160. Its totient is φ = 45194200.

The previous prime is 99989711. The next prime is 99989759. The reversal of 99989758 is 85798999.

It is a self number, because there is not a number n which added to its sum of digits gives 99989758.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99989759) 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, 8758 + ... + 16633.

It is an arithmetic number, because the mean of its divisors is an integer number (10283760).

Almost surely, 2^99989758 is an apocalyptic number.

99989758 is a deficient number, since it is larger than the sum of its proper divisors (64550402).

99989758 is a wasteful number, since it uses less digits than its factorization.

99989758 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25583.

The product of its digits is 14696640, while the sum is 64.

The square root of 99989758 is about 9999.4878868870. The cubic root of 99989758 is about 464.1430364360.

The spelling of 99989758 in words is "ninety-nine million, nine hundred eighty-nine thousand, seven hundred fifty-eight".