90777433 has 8 divisors (see below), whose sum is σ = 96821352. Its totient is φ = 84811776.

The previous prime is 90777377. The next prime is 90777437. The reversal of 90777433 is 33477709.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 8838729 + 81938704 = 2973^2 + 9052^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 90777433 - 2⁹ = 90776921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90777437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17160 + ... + 21817.

It is an arithmetic number, because the mean of its divisors is an integer number (12102669).

Almost surely, 2^90777433 is an apocalyptic number.

It is an amenable number.

90777433 is a deficient number, since it is larger than the sum of its proper divisors (6043919).

90777433 is a wasteful number, since it uses less digits than its factorization.

90777433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39131.

The product of its (nonzero) digits is 111132, while the sum is 40.

The square root of 90777433 is about 9527.7191919158. The cubic root of 90777433 is about 449.4271443079.

The spelling of 90777433 in words is "ninety million, seven hundred seventy-seven thousand, four hundred thirty-three".