99844157 has 4 divisors (see below), whose sum is σ = 114107616. Its totient is φ = 85580700.

The previous prime is 99844153. The next prime is 99844159. The reversal of 99844157 is 75144899.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75144899 = 31 ⋅2424029.

It is a cyclic number.

It is not a de Polignac number, because 99844157 - 2² = 99844153 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99844153) 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, 7131719 + ... + 7131732.

It is an arithmetic number, because the mean of its divisors is an integer number (28526904).

Almost surely, 2^99844157 is an apocalyptic number.

It is an amenable number.

99844157 is a deficient number, since it is larger than the sum of its proper divisors (14263459).

99844157 is a wasteful number, since it uses less digits than its factorization.

99844157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14263458.

The product of its digits is 362880, while the sum is 47.

The square root of 99844157 is about 9992.2048117520. The cubic root of 99844157 is about 463.9176382871.

It can be divided in two parts, 99844 and 157, that added together give a palindrome (100001).

The spelling of 99844157 in words is "ninety-nine million, eight hundred forty-four thousand, one hundred fifty-seven".