90767393 has 2 divisors, whose sum is σ = 90767394. Its totient is φ = 90767392.

The previous prime is 90767381. The next prime is 90767431. The reversal of 90767393 is 39376709.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68939809 + 21827584 = 8303^2 + 4672^2 .

It is a cyclic number.

It is not a de Polignac number, because 90767393 - 2¹² = 90763297 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (90767353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45383696 + 45383697.

It is an arithmetic number, because the mean of its divisors is an integer number (45383697).

Almost surely, 2^90767393 is an apocalyptic number.

It is an amenable number.

90767393 is a deficient number, since it is larger than the sum of its proper divisors (1).

90767393 is an equidigital number, since it uses as much as digits as its factorization.

90767393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 214326, while the sum is 44.

The square root of 90767393 is about 9527.1922936403. The cubic root of 90767393 is about 449.4105747901.

The spelling of 90767393 in words is "ninety million, seven hundred sixty-seven thousand, three hundred ninety-three".