93939661 has 2 divisors, whose sum is σ = 93939662. Its totient is φ = 93939660.

The previous prime is 93939653. The next prime is 93939673. The reversal of 93939661 is 16693939.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68989636 + 24950025 = 8306^2 + 4995^2 .

It is an emirp because it is prime and its reverse (16693939) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 93939661 - 2³ = 93939653 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (93933661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 46969830 + 46969831.

It is an arithmetic number, because the mean of its divisors is an integer number (46969831).

Almost surely, 2^93939661 is an apocalyptic number.

It is an amenable number.

93939661 is a deficient number, since it is larger than the sum of its proper divisors (1).

93939661 is an equidigital number, since it uses as much as digits as its factorization.

93939661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 236196, while the sum is 46.

The square root of 93939661 is about 9692.2474689826. The cubic root of 93939661 is about 454.5862857757.

The spelling of 93939661 in words is "ninety-three million, nine hundred thirty-nine thousand, six hundred sixty-one".