99538620 has 24 divisors (see below), whose sum is σ = 278708304. Its totient is φ = 26543616.

The previous prime is 99538609. The next prime is 99538627. The reversal of 99538620 is 2683599.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99538627) 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, 829429 + ... + 829548.

It is an arithmetic number, because the mean of its divisors is an integer number (11612846).

Almost surely, 2^99538620 is an apocalyptic number.

It is an amenable number.

99538620 is an abundant number, since it is smaller than the sum of its proper divisors (179169684).

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

99538620 is a wasteful number, since it uses less digits than its factorization.

99538620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1658989 (or 1658987 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 42.

The square root of 99538620 is about 9976.9043295002. The cubic root of 99538620 is about 463.4439372732.

The spelling of 99538620 in words is "ninety-nine million, five hundred thirty-eight thousand, six hundred twenty".