93391253921 has 4 divisors (see below), whose sum is σ = 106732861632. Its totient is φ = 80049646212.

The previous prime is 93391253903. The next prime is 93391253927. The reversal of 93391253921 is 12935219339.

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 93391253921 - 2²² = 93387059617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (93391253927) 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, 6670803845 + ... + 6670803858.

It is an arithmetic number, because the mean of its divisors is an integer number (26683215408).

Almost surely, 2^93391253921 is an apocalyptic number.

It is an amenable number.

93391253921 is a deficient number, since it is larger than the sum of its proper divisors (13341607711).

93391253921 is a wasteful number, since it uses less digits than its factorization.

93391253921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13341607710.

The product of its digits is 393660, while the sum is 47.

The spelling of 93391253921 in words is "ninety-three billion, three hundred ninety-one million, two hundred fifty-three thousand, nine hundred twenty-one".