90416779 has 4 divisors (see below), whose sum is σ = 90452376. Its totient is φ = 90381184.

The previous prime is 90416773. The next prime is 90416803. The reversal of 90416779 is 97761409.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 90416779 - 2⁵ = 90416747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90416773) 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, 13669 + ... + 19174.

It is an arithmetic number, because the mean of its divisors is an integer number (22613094).

Almost surely, 2^90416779 is an apocalyptic number.

90416779 is a deficient number, since it is larger than the sum of its proper divisors (35597).

90416779 is a wasteful number, since it uses less digits than its factorization.

90416779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35596.

The product of its (nonzero) digits is 95256, while the sum is 43.

The square root of 90416779 is about 9508.7737905579. The cubic root of 90416779 is about 448.8311708290.

The spelling of 90416779 in words is "ninety million, four hundred sixteen thousand, seven hundred seventy-nine".