93994391 has 4 divisors (see below), whose sum is σ = 94143984. Its totient is φ = 93844800.

The previous prime is 93994379. The next prime is 93994403. The reversal of 93994391 is 19349939.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19349939 = 7 ⋅2764277.

It is an interprime number because it is at equal distance from previous prime (93994379) and next prime (93994403).

It is a cyclic number.

It is not a de Polignac number, because 93994391 - 2²⁶ = 26885527 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 (93994301) 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, 73850 + ... + 75111.

It is an arithmetic number, because the mean of its divisors is an integer number (23535996).

Almost surely, 2^93994391 is an apocalyptic number.

93994391 is a deficient number, since it is larger than the sum of its proper divisors (149593).

93994391 is a wasteful number, since it uses less digits than its factorization.

93994391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149592.

The product of its digits is 236196, while the sum is 47.

The square root of 93994391 is about 9695.0704484289. The cubic root of 93994391 is about 454.6745505088.

The spelling of 93994391 in words is "ninety-three million, nine hundred ninety-four thousand, three hundred ninety-one".