99858744 has 80 divisors (see below), whose sum is σ = 283662720. Its totient is φ = 32814720.

The previous prime is 99858727. The next prime is 99858761. The reversal of 99858744 is 44785899.

It is an interprime number because it is at equal distance from previous prime (99858727) and next prime (99858761).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 46249 + ... + 48359.

It is an arithmetic number, because the mean of its divisors is an integer number (3545784).

Almost surely, 2^99858744 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 99858744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141831360).

99858744 is an abundant number, since it is smaller than the sum of its proper divisors (183803976).

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

99858744 is a wasteful number, since it uses less digits than its factorization.

99858744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2202 (or 2189 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 54.

The square root of 99858744 is about 9992.9347040797. The cubic root of 99858744 is about 463.9402296177.

The spelling of 99858744 in words is "ninety-nine million, eight hundred fifty-eight thousand, seven hundred forty-four".