99997850 has 12 divisors (see below), whose sum is σ = 185996094. Its totient is φ = 39999120.

The previous prime is 99997841. The next prime is 99997867. The reversal of 99997850 is 5879999.

It can be written as a sum of positive squares in 3 ways, for example, as 88755241 + 11242609 = 9421^2 + 3353^2 .

It is a hoax number, since the sum of its digits (56) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 999929 + ... + 1000028.

Almost surely, 2^99997850 is an apocalyptic number.

99997850 is a deficient number, since it is larger than the sum of its proper divisors (85998244).

99997850 is a wasteful number, since it uses less digits than its factorization.

99997850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1999969 (or 1999964 counting only the distinct ones).

The product of its (nonzero) digits is 1837080, while the sum is 56.

The square root of 99997850 is about 9999.8924994222. The cubic root of 99997850 is about 464.1555568654.

The spelling of 99997850 in words is "ninety-nine million, nine hundred ninety-seven thousand, eight hundred fifty".