99159801 has 24 divisors (see below), whose sum is σ = 145603584. Its totient is φ = 59671200.

The previous prime is 99159779. The next prime is 99159811. The reversal of 99159801 is 10895199.

It is not a de Polignac number, because 99159801 - 2⁷ = 99159673 is a prime.

It is a super-2 number, since 2×99159801² = 19665332268719202, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (99159811) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 85576 + ... + 86726.

It is an arithmetic number, because the mean of its divisors is an integer number (6066816).

Almost surely, 2^99159801 is an apocalyptic number.

It is an amenable number.

99159801 is a deficient number, since it is larger than the sum of its proper divisors (46443783).

99159801 is a wasteful number, since it uses less digits than its factorization.

99159801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1261 (or 1214 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 42.

The square root of 99159801 is about 9957.9014355435. The cubic root of 99159801 is about 462.8552727759.

The spelling of 99159801 in words is "ninety-nine million, one hundred fifty-nine thousand, eight hundred one".