90459577 has 4 divisors (see below), whose sum is σ = 97418020. Its totient is φ = 83501136.

The previous prime is 90459563. The next prime is 90459599. The reversal of 90459577 is 77595409.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 77595409 = 1201 ⋅64609.

It can be written as a sum of positive squares in 2 ways, for example, as 36348841 + 54110736 = 6029^2 + 7356^2 .

It is a cyclic number.

It is not a de Polignac number, because 90459577 - 2¹¹ = 90457529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90459557) 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, 3479202 + ... + 3479227.

It is an arithmetic number, because the mean of its divisors is an integer number (24354505).

Almost surely, 2^90459577 is an apocalyptic number.

It is an amenable number.

90459577 is a deficient number, since it is larger than the sum of its proper divisors (6958443).

90459577 is a wasteful number, since it uses less digits than its factorization.

90459577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6958442.

The product of its (nonzero) digits is 396900, while the sum is 46.

The square root of 90459577 is about 9511.0239722125. The cubic root of 90459577 is about 448.9019764421.

The spelling of 90459577 in words is "ninety million, four hundred fifty-nine thousand, five hundred seventy-seven".