99919373 has 4 divisors (see below), whose sum is σ = 100889568. Its totient is φ = 98949180.

The previous prime is 99919367. The next prime is 99919399. The reversal of 99919373 is 37391999.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 99919373 - 2⁴ = 99919357 is a prime.

It is a super-2 number, since 2×99919373² = 19967762201426258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99919343) 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, 484943 + ... + 485148.

It is an arithmetic number, because the mean of its divisors is an integer number (25222392).

Almost surely, 2^99919373 is an apocalyptic number.

It is an amenable number.

99919373 is a deficient number, since it is larger than the sum of its proper divisors (970195).

99919373 is a wasteful number, since it uses less digits than its factorization.

99919373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 970194.

The product of its digits is 413343, while the sum is 50.

The square root of 99919373 is about 9995.9678370831. The cubic root of 99919373 is about 464.0341040257.

The spelling of 99919373 in words is "ninety-nine million, nine hundred nineteen thousand, three hundred seventy-three".