99409000 has 32 divisors (see below), whose sum is σ = 232619400. Its totient is φ = 39763200.

The previous prime is 99408983. The next prime is 99409021. The reversal of 99409000 is 90499.

It can be written as a sum of positive squares in 4 ways, for example, as 36650916 + 62758084 = 6054^2 + 7922^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48705 + ... + 50704.

Almost surely, 2^99409000 is an apocalyptic number.

It is an amenable number.

99409000 is an abundant number, since it is smaller than the sum of its proper divisors (133210400).

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

99409000 is a wasteful number, since it uses less digits than its factorization.

99409000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99430 (or 99416 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 99409000 is about 9970.4062103808. The cubic root of 99409000 is about 463.2426830690.

Adding to 99409000 its reverse (90499), we get a palindrome (99499499).

The spelling of 99409000 in words is "ninety-nine million, four hundred nine thousand".