99997000 has 96 divisors (see below), whose sum is σ = 247848120. Its totient is φ = 37756800.

The previous prime is 99996983. The next prime is 99997033. The reversal of 99997000 is 79999.

It can be written as a sum of positive squares in 4 ways, for example, as 14730244 + 85266756 = 3838^2 + 9234^2 .

It is a nialpdrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 360862 + ... + 361138.

Almost surely, 2^99997000 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 99997000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123924060).

99997000 is an abundant number, since it is smaller than the sum of its proper divisors (147851120).

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

99997000 is a wasteful number, since it uses less digits than its factorization.

99997000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336 (or 303 counting only the distinct ones).

The product of its (nonzero) digits is 45927, while the sum is 43.

The square root of 99997000 is about 9999.8499988750. The cubic root of 99997000 is about 464.1542417260.

The spelling of 99997000 in words is "ninety-nine million, nine hundred ninety-seven thousand".