99415140 has 192 divisors, whose sum is σ = 323592192. Its totient is φ = 22579200.

The previous prime is 99415139. The next prime is 99415187. The reversal of 99415140 is 4151499.

It is a super-2 number, since 2×99415140² = 19766740122439200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 879724 + ... + 879836.

It is an arithmetic number, because the mean of its divisors is an integer number (1685376).

Almost surely, 2^99415140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99415140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161796096).

99415140 is an abundant number, since it is smaller than the sum of its proper divisors (224177052).

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

99415140 is a wasteful number, since it uses less digits than its factorization.

99415140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210 (or 208 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 99415140 is about 9970.7141168524. The cubic root of 99415140 is about 463.2522202723.

It can be divided in two parts, 9 and 9415140, that added together give a palindrome (9415149).

The spelling of 99415140 in words is "ninety-nine million, four hundred fifteen thousand, one hundred forty".