99259819 has 4 divisors (see below), whose sum is σ = 104484040. Its totient is φ = 94035600.

The previous prime is 99259813. The next prime is 99259841. The reversal of 99259819 is 91895299.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99259819 is a prime.

It is a super-2 number, since 2×99259819² = 19705023335825522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (99259813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2612082 + ... + 2612119.

It is an arithmetic number, because the mean of its divisors is an integer number (26121010).

Almost surely, 2^99259819 is an apocalyptic number.

99259819 is a deficient number, since it is larger than the sum of its proper divisors (5224221).

99259819 is a wasteful number, since it uses less digits than its factorization.

99259819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5224220.

The product of its digits is 524880, while the sum is 52.

The square root of 99259819 is about 9962.9222118814. The cubic root of 99259819 is about 463.0108408659.

The spelling of 99259819 in words is "ninety-nine million, two hundred fifty-nine thousand, eight hundred nineteen".