478949697 has 6 divisors (see below), whose sum is σ = 691816242. Its totient is φ = 319299792.

The previous prime is 478949683. The next prime is 478949699. The reversal of 478949697 is 796949874.

It can be written as a sum of positive squares in only one way, i.e., 334012176 + 144937521 = 18276^2 + 12039^2 .

It is not a de Polignac number, because 478949697 - 2¹² = 478945601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (478949699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26608308 + ... + 26608325.

It is an arithmetic number, because the mean of its divisors is an integer number (115302707).

Almost surely, 2^478949697 is an apocalyptic number.

It is an amenable number.

478949697 is a deficient number, since it is larger than the sum of its proper divisors (212866545).

478949697 is a wasteful number, since it uses less digits than its factorization.

478949697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53216639 (or 53216636 counting only the distinct ones).

The product of its digits is 27433728, while the sum is 63.

The square root of 478949697 is about 21884.9193966987. The cubic root of 478949697 is about 782.4020282435.

The spelling of 478949697 in words is "four hundred seventy-eight million, nine hundred forty-nine thousand, six hundred ninety-seven".