90940079 has 2 divisors, whose sum is σ = 90940080. Its totient is φ = 90940078.

The previous prime is 90940051. The next prime is 90940093. The reversal of 90940079 is 97004909.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90940079 - 2¹⁶ = 90874543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90940579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45470039 + 45470040.

It is an arithmetic number, because the mean of its divisors is an integer number (45470040).

Almost surely, 2^90940079 is an apocalyptic number.

90940079 is a deficient number, since it is larger than the sum of its proper divisors (1).

90940079 is an equidigital number, since it uses as much as digits as its factorization.

90940079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20412, while the sum is 38.

The square root of 90940079 is about 9536.2507831957. The cubic root of 90940079 is about 449.6953971545.

The spelling of 90940079 in words is "ninety million, nine hundred forty thousand, seventy-nine".