99398550 has 24 divisors (see below), whose sum is σ = 246508776. Its totient is φ = 26506240.

The previous prime is 99398549. The next prime is 99398581. The reversal of 99398550 is 5589399.

It is a self number, because there is not a number n which added to its sum of digits gives 99398550.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 331179 + ... + 331478.

It is an arithmetic number, because the mean of its divisors is an integer number (10271199).

Almost surely, 2^99398550 is an apocalyptic number.

99398550 is an abundant number, since it is smaller than the sum of its proper divisors (147110226).

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

99398550 is a wasteful number, since it uses less digits than its factorization.

99398550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662672 (or 662667 counting only the distinct ones).

The product of its (nonzero) digits is 437400, while the sum is 48.

The square root of 99398550 is about 9969.8821457427. The cubic root of 99398550 is about 463.2264502810.

The spelling of 99398550 in words is "ninety-nine million, three hundred ninety-eight thousand, five hundred fifty".