90779485 has 4 divisors (see below), whose sum is σ = 108935388. Its totient is φ = 72623584.

The previous prime is 90779471. The next prime is 90779519. The reversal of 90779485 is 58497709.

It is a happy number.

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 52969284 + 37810201 = 7278^2 + 6149^2 .

It is a cyclic number.

It is not a de Polignac number, because 90779485 - 2⁷ = 90779357 is a prime.

It is a Smith number, since the sum of its digits (49) 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 an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9077944 + ... + 9077953.

It is an arithmetic number, because the mean of its divisors is an integer number (27233847).

Almost surely, 2^90779485 is an apocalyptic number.

It is an amenable number.

90779485 is a deficient number, since it is larger than the sum of its proper divisors (18155903).

90779485 is a wasteful number, since it uses less digits than its factorization.

90779485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18155902.

The product of its (nonzero) digits is 635040, while the sum is 49.

The square root of 90779485 is about 9527.8268771006. The cubic root of 90779485 is about 449.4305306766.

The spelling of 90779485 in words is "ninety million, seven hundred seventy-nine thousand, four hundred eighty-five".