478391001 has 16 divisors (see below), whose sum is σ = 704229120. Its totient is φ = 286439120.

The previous prime is 478390967. The next prime is 478391003. The reversal of 478391001 is 100193874.

It is not a de Polignac number, because 478391001 - 2⁶ = 478390937 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (478391003) 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, 84591 + ... + 90068.

It is an arithmetic number, because the mean of its divisors is an integer number (44014320).

Almost surely, 2^478391001 is an apocalyptic number.

It is an amenable number.

478391001 is a deficient number, since it is larger than the sum of its proper divisors (225838119).

478391001 is a wasteful number, since it uses less digits than its factorization.

478391001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174756.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 478391001 is about 21872.1512659363. The cubic root of 478391001 is about 782.0976852435.

The spelling of 478391001 in words is "four hundred seventy-eight million, three hundred ninety-one thousand, one".