99425640 has 32 divisors (see below), whose sum is σ = 298277280. Its totient is φ = 26513472.

The previous prime is 99425611. The next prime is 99425647. The reversal of 99425640 is 4652499.

It is not an unprimeable number, because it can be changed into a prime (99425647) 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, 414154 + ... + 414393.

It is an arithmetic number, because the mean of its divisors is an integer number (9321165).

Almost surely, 2^99425640 is an apocalyptic number.

It is an amenable number.

99425640 is an abundant number, since it is smaller than the sum of its proper divisors (198851640).

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

99425640 is a wasteful number, since it uses less digits than its factorization.

99425640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 828561 (or 828557 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 99425640 is about 9971.2406449749. The cubic root of 99425640 is about 463.2685289119.

The spelling of 99425640 in words is "ninety-nine million, four hundred twenty-five thousand, six hundred forty".