99907776 has 224 divisors, whose sum is σ = 329184000. Its totient is φ = 29528064.

The previous prime is 99907763. The next prime is 99907781. The reversal of 99907776 is 67770999.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 558055 + ... + 558233.

Almost surely, 2^99907776 is an apocalyptic number.

99907776 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 99907776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164592000).

99907776 is an abundant number, since it is smaller than the sum of its proper divisors (229276224).

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

99907776 is a wasteful number, since it uses less digits than its factorization.

99907776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236 (or 220 counting only the distinct ones).

The product of its (nonzero) digits is 1500282, while the sum is 54.

The square root of 99907776 is about 9995.3877363512. The cubic root of 99907776 is about 464.0161508449.

It can be divided in two parts, 9990 and 7776, that added together give a triangular number (17766 = T₁₈₈).

The spelling of 99907776 in words is "ninety-nine million, nine hundred seven thousand, seven hundred seventy-six".