99847955 has 4 divisors (see below), whose sum is σ = 119817552. Its totient is φ = 79878360.

The previous prime is 99847927. The next prime is 99847961. The reversal of 99847955 is 55974899.

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

It is not a de Polignac number, because 99847955 - 2²² = 95653651 is a prime.

It is a super-2 number, since 2×99847955² = 19939228235364050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 99847955.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9984791 + ... + 9984800.

It is an arithmetic number, because the mean of its divisors is an integer number (29954388).

Almost surely, 2^99847955 is an apocalyptic number.

99847955 is a deficient number, since it is larger than the sum of its proper divisors (19969597).

99847955 is a wasteful number, since it uses less digits than its factorization.

99847955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19969596.

The product of its digits is 4082400, while the sum is 56.

The square root of 99847955 is about 9992.3948580908. The cubic root of 99847955 is about 463.9235205771.

The spelling of 99847955 in words is "ninety-nine million, eight hundred forty-seven thousand, nine hundred fifty-five".