90712469 has 2 divisors, whose sum is σ = 90712470. Its totient is φ = 90712468.

The previous prime is 90712423. The next prime is 90712477. The reversal of 90712469 is 96421709.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88924900 + 1787569 = 9430^2 + 1337^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90712469 is a prime.

It is a super-2 number, since 2×90712469² = 16457504064151922, 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 (90012469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45356234 + 45356235.

It is an arithmetic number, because the mean of its divisors is an integer number (45356235).

Almost surely, 2^90712469 is an apocalyptic number.

It is an amenable number.

90712469 is a deficient number, since it is larger than the sum of its proper divisors (1).

90712469 is an equidigital number, since it uses as much as digits as its factorization.

90712469 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 90712469 is about 9524.3093712878. The cubic root of 90712469 is about 449.3199093137.

The spelling of 90712469 in words is "ninety million, seven hundred twelve thousand, four hundred sixty-nine".