99620238 has 16 divisors (see below), whose sum is σ = 210960720. Its totient is φ = 31253376.

The previous prime is 99620237. The next prime is 99620263. The reversal of 99620238 is 83202699.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 99620196 and 99620205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99620237) 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 7 ways as a sum of consecutive naturals, for example, 488233 + ... + 488436.

It is an arithmetic number, because the mean of its divisors is an integer number (13185045).

Almost surely, 2^99620238 is an apocalyptic number.

99620238 is an abundant number, since it is smaller than the sum of its proper divisors (111340482).

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

99620238 is a wasteful number, since it uses less digits than its factorization.

99620238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 976691.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 99620238 is about 9980.9938382909. The cubic root of 99620238 is about 463.5705716506.

The spelling of 99620238 in words is "ninety-nine million, six hundred twenty thousand, two hundred thirty-eight".