94008721 has 2 divisors, whose sum is σ = 94008722. Its totient is φ = 94008720.

The previous prime is 94008703. The next prime is 94008731. The reversal of 94008721 is 12780049.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48108096 + 45900625 = 6936^2 + 6775^2 .

It is a cyclic number.

It is not a de Polignac number, because 94008721 - 2⁵ = 94008689 is a prime.

It is not a weakly prime, because it can be changed into another prime (94008701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47004360 + 47004361.

It is an arithmetic number, because the mean of its divisors is an integer number (47004361).

Almost surely, 2^94008721 is an apocalyptic number.

It is an amenable number.

94008721 is a deficient number, since it is larger than the sum of its proper divisors (1).

94008721 is an equidigital number, since it uses as much as digits as its factorization.

94008721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 94008721 is about 9695.8094556360. The cubic root of 94008721 is about 454.6976552748.

The spelling of 94008721 in words is "ninety-four million, eight thousand, seven hundred twenty-one".