93194021 has 2 divisors, whose sum is σ = 93194022. Its totient is φ = 93194020.

The previous prime is 93193979. The next prime is 93194027. The reversal of 93194021 is 12049139.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52041796 + 41152225 = 7214^2 + 6415^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-93194021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (93194027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 46597010 + 46597011.

It is an arithmetic number, because the mean of its divisors is an integer number (46597011).

Almost surely, 2^93194021 is an apocalyptic number.

It is an amenable number.

93194021 is a deficient number, since it is larger than the sum of its proper divisors (1).

93194021 is an equidigital number, since it uses as much as digits as its factorization.

93194021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 93194021 is about 9653.7050400351. The cubic root of 93194021 is about 453.3803396447.

The spelling of 93194021 in words is "ninety-three million, one hundred ninety-four thousand, twenty-one".