99399690 has 64 divisors (see below), whose sum is σ = 285465600. Its totient is φ = 24466752.

The previous prime is 99399661. The next prime is 99399691. The reversal of 99399690 is 9699399.

It is a super-2 number, since 2×99399690² = 19760596744192200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (99399691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10650 + ... + 17669.

It is an arithmetic number, because the mean of its divisors is an integer number (4460400).

Almost surely, 2^99399690 is an apocalyptic number.

99399690 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

99399690 is an abundant number, since it is smaller than the sum of its proper divisors (186065910).

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

99399690 is a wasteful number, since it uses less digits than its factorization.

99399690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28348 (or 28342 counting only the distinct ones).

The product of its (nonzero) digits is 1062882, while the sum is 54.

The square root of 99399690 is about 9969.9393177692. The cubic root of 99399690 is about 463.2282211859.

The spelling of 99399690 in words is "ninety-nine million, three hundred ninety-nine thousand, six hundred ninety".