90204967 has 2 divisors, whose sum is σ = 90204968. Its totient is φ = 90204966.

The previous prime is 90204953. The next prime is 90204973. The reversal of 90204967 is 76940209.

It is a strong prime.

It is an emirp because it is prime and its reverse (76940209) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90204967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90204977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45102483 + 45102484.

It is an arithmetic number, because the mean of its divisors is an integer number (45102484).

Almost surely, 2^90204967 is an apocalyptic number.

90204967 is a deficient number, since it is larger than the sum of its proper divisors (1).

90204967 is an equidigital number, since it uses as much as digits as its factorization.

90204967 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 90204967 is about 9497.6295463658. The cubic root of 90204967 is about 448.4804167556.

The spelling of 90204967 in words is "ninety million, two hundred four thousand, nine hundred sixty-seven".