90424477 has 32 divisors (see below), whose sum is σ = 116766720. Its totient is φ = 68713920.

The previous prime is 90424471. The next prime is 90424483. The reversal of 90424477 is 77442409.

It is an interprime number because it is at equal distance from previous prime (90424471) and next prime (90424483).

It is not a de Polignac number, because 90424477 - 2³ = 90424469 is a prime.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90424471) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61768 + ... + 63214.

It is an arithmetic number, because the mean of its divisors is an integer number (3648960).

Almost surely, 2^90424477 is an apocalyptic number.

It is an amenable number.

90424477 is a deficient number, since it is larger than the sum of its proper divisors (26342243).

90424477 is a wasteful number, since it uses less digits than its factorization.

90424477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1513.

The product of its (nonzero) digits is 56448, while the sum is 37.

The square root of 90424477 is about 9509.1785659961. The cubic root of 90424477 is about 448.8439081562.

The spelling of 90424477 in words is "ninety million, four hundred twenty-four thousand, four hundred seventy-seven".