478964615 has 4 divisors (see below), whose sum is σ = 574757544. Its totient is φ = 383171688.

The previous prime is 478964533. The next prime is 478964617. The reversal of 478964615 is 516469874.

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 478964615 - 2⁸ = 478964359 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 (478964617) 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, 47896457 + ... + 47896466.

It is an arithmetic number, because the mean of its divisors is an integer number (143689386).

Almost surely, 2^478964615 is an apocalyptic number.

478964615 is a deficient number, since it is larger than the sum of its proper divisors (95792929).

478964615 is an equidigital number, since it uses as much as digits as its factorization.

478964615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95792928.

The product of its digits is 1451520, while the sum is 50.

The square root of 478964615 is about 21885.2602223506. The cubic root of 478964615 is about 782.4101514016.

The spelling of 478964615 in words is "four hundred seventy-eight million, nine hundred sixty-four thousand, six hundred fifteen".