90879767 has 8 divisors (see below), whose sum is σ = 99513360. Its totient is φ = 82308160.

The previous prime is 90879757. The next prime is 90879797. The reversal of 90879767 is 76797809.

It is a happy number.

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

It is not a de Polignac number, because 90879767 - 2⁴ = 90879751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90879727) 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, 12398 + ... + 18315.

It is an arithmetic number, because the mean of its divisors is an integer number (12439170).

Almost surely, 2^90879767 is an apocalyptic number.

90879767 is a deficient number, since it is larger than the sum of its proper divisors (8633593).

90879767 is a wasteful number, since it uses less digits than its factorization.

90879767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30993.

The product of its (nonzero) digits is 1333584, while the sum is 53.

The square root of 90879767 is about 9533.0880096640. The cubic root of 90879767 is about 449.5959616173.

The spelling of 90879767 in words is "ninety million, eight hundred seventy-nine thousand, seven hundred sixty-seven".