93664009 has 2 divisors, whose sum is σ = 93664010. Its totient is φ = 93664008.

The previous prime is 93664001. The next prime is 93664079. The reversal of 93664009 is 90046639.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82083600 + 11580409 = 9060^2 + 3403^2 .

It is an emirp because it is prime and its reverse (90046639) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 93664009 - 2³ = 93664001 is a prime.

It is not a weakly prime, because it can be changed into another prime (93664001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 46832004 + 46832005.

It is an arithmetic number, because the mean of its divisors is an integer number (46832005).

Almost surely, 2^93664009 is an apocalyptic number.

It is an amenable number.

93664009 is a deficient number, since it is larger than the sum of its proper divisors (1).

93664009 is an equidigital number, since it uses as much as digits as its factorization.

93664009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 37.

The square root of 93664009 is about 9678.0167906447. The cubic root of 93664009 is about 454.1412114828.

The spelling of 93664009 in words is "ninety-three million, six hundred sixty-four thousand, nine".