478322247 has 16 divisors (see below), whose sum is σ = 691378688. Its totient is φ = 292399200.

The previous prime is 478322231. The next prime is 478322267. The reversal of 478322247 is 742223874.

It is not a de Polignac number, because 478322247 - 2⁴ = 478322231 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478322267) 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, 34723 + ... + 46500.

It is an arithmetic number, because the mean of its divisors is an integer number (43211168).

Almost surely, 2^478322247 is an apocalyptic number.

478322247 is a deficient number, since it is larger than the sum of its proper divisors (213056441).

478322247 is a wasteful number, since it uses less digits than its factorization.

478322247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81390.

The product of its digits is 150528, while the sum is 39.

The square root of 478322247 is about 21870.5794847782. The cubic root of 478322247 is about 782.0602159486.

The spelling of 478322247 in words is "four hundred seventy-eight million, three hundred twenty-two thousand, two hundred forty-seven".