90794897 has 2 divisors, whose sum is σ = 90794898. Its totient is φ = 90794896.

The previous prime is 90794881. The next prime is 90794903. The reversal of 90794897 is 79849709.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59613841 + 31181056 = 7721^2 + 5584^2 .

It is an emirp because it is prime and its reverse (79849709) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90794897 - 2⁴ = 90794881 is a prime.

It is not a weakly prime, because it can be changed into another prime (90794857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45397448 + 45397449.

It is an arithmetic number, because the mean of its divisors is an integer number (45397449).

Almost surely, 2^90794897 is an apocalyptic number.

It is an amenable number.

90794897 is a deficient number, since it is larger than the sum of its proper divisors (1).

90794897 is an equidigital number, since it uses as much as digits as its factorization.

90794897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1143072, while the sum is 53.

The square root of 90794897 is about 9528.6356316106. The cubic root of 90794897 is about 449.4559631165.

The spelling of 90794897 in words is "ninety million, seven hundred ninety-four thousand, eight hundred ninety-seven".