93639381 has 8 divisors (see below), whose sum is σ = 136202784. Its totient is φ = 56751120.

The previous prime is 93639379. The next prime is 93639389. The reversal of 93639381 is 18393639.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 93639381 - 2¹ = 93639379 is a prime.

It is a super-2 number, since 2×93639381² = 17536667348126322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (93639389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1418746 + ... + 1418811.

It is an arithmetic number, because the mean of its divisors is an integer number (17025348).

Almost surely, 2^93639381 is an apocalyptic number.

It is an amenable number.

93639381 is a deficient number, since it is larger than the sum of its proper divisors (42563403).

93639381 is a wasteful number, since it uses less digits than its factorization.

93639381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2837571.

The product of its digits is 104976, while the sum is 42.

The square root of 93639381 is about 9676.7443388776. The cubic root of 93639381 is about 454.1014040537.

The spelling of 93639381 in words is "ninety-three million, six hundred thirty-nine thousand, three hundred eighty-one".