90498431 has 2 divisors, whose sum is σ = 90498432. Its totient is φ = 90498430.

The previous prime is 90498427. The next prime is 90498437. The reversal of 90498431 is 13489409.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90498431 - 2² = 90498427 is a prime.

It is a super-2 number, since 2×90498431² = 16379932026923522, 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 (90498437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45249215 + 45249216.

It is an arithmetic number, because the mean of its divisors is an integer number (45249216).

Almost surely, 2^90498431 is an apocalyptic number.

90498431 is a deficient number, since it is larger than the sum of its proper divisors (1).

90498431 is an equidigital number, since it uses as much as digits as its factorization.

90498431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 90498431 is about 9513.0663300536. The cubic root of 90498431 is about 448.9662377082.

The spelling of 90498431 in words is "ninety million, four hundred ninety-eight thousand, four hundred thirty-one".