99775140 has 48 divisors (see below), whose sum is σ = 286191360. Its totient is φ = 25957120.

The previous prime is 99775139. The next prime is 99775163. The reversal of 99775140 is 4157799.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 99775092 and 99775101.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17820 + ... + 22739.

It is an arithmetic number, because the mean of its divisors is an integer number (5962320).

Almost surely, 2^99775140 is an apocalyptic number.

It is an amenable number.

99775140 is an abundant number, since it is smaller than the sum of its proper divisors (186416220).

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

99775140 is a wasteful number, since it uses less digits than its factorization.

99775140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40612 (or 40610 counting only the distinct ones).

The product of its (nonzero) digits is 79380, while the sum is 42.

The square root of 99775140 is about 9988.7506726317. The cubic root of 99775140 is about 463.8107197154.

The spelling of 99775140 in words is "ninety-nine million, seven hundred seventy-five thousand, one hundred forty".