90478479 has 16 divisors (see below), whose sum is σ = 148477952. Its totient is φ = 47724768.

The previous prime is 90478417. The next prime is 90478501. The reversal of 90478479 is 97487409.

It is a happy number.

It is not a de Polignac number, because 90478479 - 2⁹ = 90477967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90478679) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 165439 + ... + 165984.

It is an arithmetic number, because the mean of its divisors is an integer number (9279872).

Almost surely, 2^90478479 is an apocalyptic number.

90478479 is a deficient number, since it is larger than the sum of its proper divisors (57999473).

90478479 is a wasteful number, since it uses less digits than its factorization.

90478479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331446.

The product of its (nonzero) digits is 508032, while the sum is 48.

The square root of 90478479 is about 9512.0176093193. The cubic root of 90478479 is about 448.9332410670.

The spelling of 90478479 in words is "ninety million, four hundred seventy-eight thousand, four hundred seventy-nine".