90266431 has 2 divisors, whose sum is σ = 90266432. Its totient is φ = 90266430.

The previous prime is 90266411. The next prime is 90266453. The reversal of 90266431 is 13466209.

It is a weak prime.

It is an emirp because it is prime and its reverse (13466209) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90266431 - 2⁵ = 90266399 is a prime.

It is a super-2 number, since 2×90266431² = 16296057130955522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 90266393 and 90266402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90266411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45133215 + 45133216.

It is an arithmetic number, because the mean of its divisors is an integer number (45133216).

Almost surely, 2^90266431 is an apocalyptic number.

90266431 is a deficient number, since it is larger than the sum of its proper divisors (1).

90266431 is an equidigital number, since it uses as much as digits as its factorization.

90266431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 90266431 is about 9500.8647501162. The cubic root of 90266431 is about 448.5822557222.

The spelling of 90266431 in words is "ninety million, two hundred sixty-six thousand, four hundred thirty-one".