99890030 has 32 divisors (see below), whose sum is σ = 190080000. Its totient is φ = 37690272.

The previous prime is 99890017. The next prime is 99890033. The reversal of 99890030 is 3009899.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99890033) 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, 48971 + ... + 50969.

It is an arithmetic number, because the mean of its divisors is an integer number (5940000).

Almost surely, 2^99890030 is an apocalyptic number.

It is a pronic number, being equal to 9994×9995.

99890030 is a deficient number, since it is larger than the sum of its proper divisors (90189970).

99890030 is a wasteful number, since it uses less digits than its factorization.

99890030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2288.

The product of its (nonzero) digits is 17496, while the sum is 38.

The square root of 99890030 is about 9994.4999874931. The cubic root of 99890030 is about 463.9886757789.

The spelling of 99890030 in words is "ninety-nine million, eight hundred ninety thousand, thirty".