99425638 has 16 divisors (see below), whose sum is σ = 162419040. Its totient is φ = 45372096.

The previous prime is 99425611. The next prime is 99425647. The reversal of 99425638 is 83652499.

It is a congruent number.

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, 19170 + ... + 23797.

It is an arithmetic number, because the mean of its divisors is an integer number (10151190).

Almost surely, 2^99425638 is an apocalyptic number.

99425638 is a deficient number, since it is larger than the sum of its proper divisors (62993402).

99425638 is a wasteful number, since it uses less digits than its factorization.

99425638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43071.

The product of its digits is 466560, while the sum is 46.

The square root of 99425638 is about 9971.2405446865. The cubic root of 99425638 is about 463.2685258056.

The spelling of 99425638 in words is "ninety-nine million, four hundred twenty-five thousand, six hundred thirty-eight".