90604469 has 2 divisors, whose sum is σ = 90604470. Its totient is φ = 90604468.

The previous prime is 90604463. The next prime is 90604477. The reversal of 90604469 is 96440609.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72880369 + 17724100 = 8537^2 + 4210^2 .

It is a cyclic number.

It is not a de Polignac number, because 90604469 - 2²⁴ = 73827253 is a prime.

It is a super-2 number, since 2×90604469² = 16418339605543922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90604463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45302234 + 45302235.

It is an arithmetic number, because the mean of its divisors is an integer number (45302235).

Almost surely, 2^90604469 is an apocalyptic number.

It is an amenable number.

90604469 is a deficient number, since it is larger than the sum of its proper divisors (1).

90604469 is an equidigital number, since it uses as much as digits as its factorization.

90604469 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 90604469 is about 9518.6379802995. The cubic root of 90604469 is about 449.1415221465.

The spelling of 90604469 in words is "ninety million, six hundred four thousand, four hundred sixty-nine".