99750840 has 64 divisors (see below), whose sum is σ = 342005760. Its totient is φ = 22800000.

The previous prime is 99750829. The next prime is 99750869. The reversal of 99750840 is 4805799.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 99750792 and 99750801.

It is a congruent number.

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, 58536 + ... + 60215.

It is an arithmetic number, because the mean of its divisors is an integer number (5343840).

Almost surely, 2^99750840 is an apocalyptic number.

It is an amenable number.

99750840 is an abundant number, since it is smaller than the sum of its proper divisors (242254920).

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

99750840 is a wasteful number, since it uses less digits than its factorization.

99750840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118772 (or 118768 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 99750840 is about 9987.5342302292. The cubic root of 99750840 is about 463.7730633226.

The spelling of 99750840 in words is "ninety-nine million, seven hundred fifty thousand, eight hundred forty".