93613921 has 2 divisors, whose sum is σ = 93613922. Its totient is φ = 93613920.

The previous prime is 93613913. The next prime is 93613937. The reversal of 93613921 is 12931639.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48455521 + 45158400 = 6961^2 + 6720^2 .

It is a cyclic number.

It is not a de Polignac number, because 93613921 - 2³ = 93613913 is a prime.

It is not a weakly prime, because it can be changed into another prime (93613991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 46806960 + 46806961.

It is an arithmetic number, because the mean of its divisors is an integer number (46806961).

Almost surely, 2^93613921 is an apocalyptic number.

It is an amenable number.

93613921 is a deficient number, since it is larger than the sum of its proper divisors (1).

93613921 is an equidigital number, since it uses as much as digits as its factorization.

93613921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8748, while the sum is 34.

The square root of 93613921 is about 9675.4287243512. The cubic root of 93613921 is about 454.0602444846.

The spelling of 93613921 in words is "ninety-three million, six hundred thirteen thousand, nine hundred twenty-one".