99997450 has 24 divisors (see below), whose sum is σ = 212566752. Its totient is φ = 34284720.

The previous prime is 99997441. The next prime is 99997459. The reversal of 99997450 is 5479999.

It is an interprime number because it is at equal distance from previous prime (99997441) and next prime (99997459).

It is not an unprimeable number, because it can be changed into a prime (99997459) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 142504 + ... + 143203.

It is an arithmetic number, because the mean of its divisors is an integer number (8856948).

Almost surely, 2^99997450 is an apocalyptic number.

99997450 is an abundant number, since it is smaller than the sum of its proper divisors (112569302).

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

99997450 is a wasteful number, since it uses less digits than its factorization.

99997450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285726 (or 285721 counting only the distinct ones).

The product of its (nonzero) digits is 918540, while the sum is 52.

The square root of 99997450 is about 9999.8724991872. The cubic root of 99997450 is about 464.1549379772.

The spelling of 99997450 in words is "ninety-nine million, nine hundred ninety-seven thousand, four hundred fifty".