478720901 has 8 divisors (see below), whose sum is σ = 507306240. Its totient is φ = 450182848.

The previous prime is 478720883. The next prime is 478720909. The reversal of 478720901 is 109027874.

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

It is not a de Polignac number, because 478720901 - 2²² = 474526597 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 (478720909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10220 + ... + 32586.

It is an arithmetic number, because the mean of its divisors is an integer number (63413280).

Almost surely, 2^478720901 is an apocalyptic number.

It is an amenable number.

478720901 is a deficient number, since it is larger than the sum of its proper divisors (28585339).

478720901 is a wasteful number, since it uses less digits than its factorization.

478720901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23643.

The product of its (nonzero) digits is 28224, while the sum is 38.

The square root of 478720901 is about 21879.6915197633. The cubic root of 478720901 is about 782.2774229751.

The spelling of 478720901 in words is "four hundred seventy-eight million, seven hundred twenty thousand, nine hundred one".