93093721 has 16 divisors (see below), whose sum is σ = 107873920. Its totient is φ = 78693120.

The previous prime is 93093697. The next prime is 93093727. The reversal of 93093721 is 12739039.

It is a cyclic number.

It is not a de Polignac number, because 93093721 - 2²¹ = 90996569 is a prime.

It is a super-3 number, since 3×93093721³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (93093727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 234295 + ... + 234691.

It is an arithmetic number, because the mean of its divisors is an integer number (6742120).

Almost surely, 2^93093721 is an apocalyptic number.

It is an amenable number.

93093721 is a deficient number, since it is larger than the sum of its proper divisors (14780199).

93093721 is a wasteful number, since it uses less digits than its factorization.

93093721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784.

The product of its (nonzero) digits is 10206, while the sum is 34.

The square root of 93093721 is about 9648.5087448787. The cubic root of 93093721 is about 453.2176311678.

The spelling of 93093721 in words is "ninety-three million, ninety-three thousand, seven hundred twenty-one".