90358469 has 4 divisors (see below), whose sum is σ = 90614796. Its totient is φ = 90102144.

The previous prime is 90358447. The next prime is 90358511. The reversal of 90358469 is 96485309.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 64480900 + 25877569 = 8030^2 + 5087^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90358469 is a prime.

It is a super-2 number, since 2×90358469² = 16329305840047922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90358409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127634 + ... + 128339.

It is an arithmetic number, because the mean of its divisors is an integer number (22653699).

Almost surely, 2^90358469 is an apocalyptic number.

It is an amenable number.

90358469 is a deficient number, since it is larger than the sum of its proper divisors (256327).

90358469 is a wasteful number, since it uses less digits than its factorization.

90358469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256326.

The product of its (nonzero) digits is 233280, while the sum is 44.

The square root of 90358469 is about 9505.7071804259. The cubic root of 90358469 is about 448.7346659772.

The spelling of 90358469 in words is "ninety million, three hundred fifty-eight thousand, four hundred sixty-nine".