99990758 has 16 divisors (see below), whose sum is σ = 171546144. Its totient is φ = 42819840.

The previous prime is 99990757. The next prime is 99990799. The reversal of 99990758 is 85709999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99990757) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26468 + ... + 30008.

It is an arithmetic number, because the mean of its divisors is an integer number (10721634).

Almost surely, 2^99990758 is an apocalyptic number.

99990758 is a deficient number, since it is larger than the sum of its proper divisors (71555386).

99990758 is a wasteful number, since it uses less digits than its factorization.

99990758 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5567.

The product of its (nonzero) digits is 1837080, while the sum is 56.

The square root of 99990758 is about 9999.5378893227. The cubic root of 99990758 is about 464.1445837327.

The spelling of 99990758 in words is "ninety-nine million, nine hundred ninety thousand, seven hundred fifty-eight".