99425840 has 20 divisors (see below), whose sum is σ = 231165264. Its totient is φ = 39770304.

The previous prime is 99425831. The next prime is 99425863. The reversal of 99425840 is 4852499.

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 621332 + ... + 621491.

Almost surely, 2^99425840 is an apocalyptic number.

It is an amenable number.

99425840 is an abundant number, since it is smaller than the sum of its proper divisors (131739424).

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

99425840 is a wasteful number, since it uses less digits than its factorization.

99425840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1242836 (or 1242830 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 99425840 is about 9971.2506738122. The cubic root of 99425840 is about 463.2688395415.

The spelling of 99425840 in words is "ninety-nine million, four hundred twenty-five thousand, eight hundred forty".