99818401 has 8 divisors (see below), whose sum is σ = 101024064. Its totient is φ = 98617200.

The previous prime is 99818393. The next prime is 99818431. The reversal of 99818401 is 10481899.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 99818401 - 2³ = 99818393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99818431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68260 + ... + 69706.

It is an arithmetic number, because the mean of its divisors is an integer number (12628008).

Almost surely, 2^99818401 is an apocalyptic number.

It is an amenable number.

99818401 is a deficient number, since it is larger than the sum of its proper divisors (1205663).

99818401 is a wasteful number, since it uses less digits than its factorization.

99818401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2231.

The product of its (nonzero) digits is 20736, while the sum is 40.

The square root of 99818401 is about 9990.9159239781. The cubic root of 99818401 is about 463.8777438135.

The spelling of 99818401 in words is "ninety-nine million, eight hundred eighteen thousand, four hundred one".