99974392493 has 4 divisors (see below), whose sum is σ = 103199372928. Its totient is φ = 96749412060.

The previous prime is 99974392429. The next prime is 99974392559. The reversal of 99974392493 is 39429347999.

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 99974392493 - 2⁶ = 99974392429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99974392093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1612490171 + ... + 1612490232.

It is an arithmetic number, because the mean of its divisors is an integer number (25799843232).

Almost surely, 2^99974392493 is an apocalyptic number.

It is an amenable number.

99974392493 is a deficient number, since it is larger than the sum of its proper divisors (3224980435).

99974392493 is a wasteful number, since it uses less digits than its factorization.

99974392493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3224980434.

The product of its digits is 119042784, while the sum is 68.

The spelling of 99974392493 in words is "ninety-nine billion, nine hundred seventy-four million, three hundred ninety-two thousand, four hundred ninety-three".