90412669 has 2 divisors, whose sum is σ = 90412670. Its totient is φ = 90412668.

The previous prime is 90412661. The next prime is 90412717. The reversal of 90412669 is 96621409.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78092569 + 12320100 = 8837^2 + 3510^2 .

It is a cyclic number.

It is not a de Polignac number, because 90412669 - 2³ = 90412661 is a prime.

It is a super-2 number, since 2×90412669² = 16348901431407122, 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 (90412661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45206334 + 45206335.

It is an arithmetic number, because the mean of its divisors is an integer number (45206335).

Almost surely, 2^90412669 is an apocalyptic number.

It is an amenable number.

90412669 is a deficient number, since it is larger than the sum of its proper divisors (1).

90412669 is an equidigital number, since it uses as much as digits as its factorization.

90412669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 90412669 is about 9508.5576719080. The cubic root of 90412669 is about 448.8243700114.

The spelling of 90412669 in words is "ninety million, four hundred twelve thousand, six hundred sixty-nine".