90715479 has 8 divisors (see below), whose sum is σ = 122937072. Its totient is φ = 59485440.

The previous prime is 90715477. The next prime is 90715501. The reversal of 90715479 is 97451709.

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 90715479 - 2¹ = 90715477 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90715479.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90715477) 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, 247674 + ... + 248039.

It is an arithmetic number, because the mean of its divisors is an integer number (15367134).

Almost surely, 2^90715479 is an apocalyptic number.

90715479 is a deficient number, since it is larger than the sum of its proper divisors (32221593).

90715479 is a wasteful number, since it uses less digits than its factorization.

90715479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495777.

The product of its (nonzero) digits is 79380, while the sum is 42.

The square root of 90715479 is about 9524.4673866836. The cubic root of 90715479 is about 449.3248790015.

The spelling of 90715479 in words is "ninety million, seven hundred fifteen thousand, four hundred seventy-nine".