99251923 has 4 divisors (see below), whose sum is σ = 103567248. Its totient is φ = 94936600.

The previous prime is 99251879. The next prime is 99251927. The reversal of 99251923 is 32915299.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32915299 = 2003 ⋅16433.

It is a cyclic number.

It is not a de Polignac number, because 99251923 - 2²⁵ = 65697491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99251927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2157628 + ... + 2157673.

It is an arithmetic number, because the mean of its divisors is an integer number (25891812).

Almost surely, 2^99251923 is an apocalyptic number.

99251923 is a deficient number, since it is larger than the sum of its proper divisors (4315325).

99251923 is a wasteful number, since it uses less digits than its factorization.

99251923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4315324.

The product of its digits is 43740, while the sum is 40.

The square root of 99251923 is about 9962.5259347216. The cubic root of 99251923 is about 462.9985632206.

The spelling of 99251923 in words is "ninety-nine million, two hundred fifty-one thousand, nine hundred twenty-three".