99137856 has 56 divisors (see below), whose sum is σ = 265505184. Its totient is φ = 32642560.

The previous prime is 99137813. The next prime is 99137881. The reversal of 99137856 is 65873199.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 12826 + ... + 19046.

It is an arithmetic number, because the mean of its divisors is an integer number (4741164).

Almost surely, 2^99137856 is an apocalyptic number.

99137856 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99137856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132752592).

99137856 is an abundant number, since it is smaller than the sum of its proper divisors (166367328).

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

99137856 is a wasteful number, since it uses less digits than its factorization.

99137856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6319 (or 6309 counting only the distinct ones).

The product of its digits is 408240, while the sum is 48.

The square root of 99137856 is about 9956.7994857786. The cubic root of 99137856 is about 462.8211255097.

The spelling of 99137856 in words is "ninety-nine million, one hundred thirty-seven thousand, eight hundred fifty-six".