93421381 has 4 divisors (see below), whose sum is σ = 93443392. Its totient is φ = 93399372.

The previous prime is 93421357. The next prime is 93421387. The reversal of 93421381 is 18312439.

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, and also an emirpimes, since its reverse is a distinct semiprime: 18312439 = 23 ⋅796193.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-93421381 is a prime.

It is a super-2 number, since 2×93421381² = 17455108855894322, 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 (93421387) 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, 2391 + ... + 13876.

It is an arithmetic number, because the mean of its divisors is an integer number (23360848).

Almost surely, 2^93421381 is an apocalyptic number.

It is an amenable number.

93421381 is a deficient number, since it is larger than the sum of its proper divisors (22011).

93421381 is a wasteful number, since it uses less digits than its factorization.

93421381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22010.

The product of its digits is 5184, while the sum is 31.

The square root of 93421381 is about 9665.4736562674. The cubic root of 93421381 is about 453.7487353844.

The spelling of 93421381 in words is "ninety-three million, four hundred twenty-one thousand, three hundred eighty-one".