478926845 has 6 divisors (see below), whose sum is σ = 574770942. Its totient is φ = 383102328.

The previous prime is 478926841. The next prime is 478926859. The reversal of 478926845 is 548629874.

It can be written as a sum of positive squares in only one way, i.e., 383141476 + 95785369 = 19574^2 + 9787^2 .

It is not a de Polignac number, because 478926845 - 2² = 478926841 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 (478926841) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 44042 + ... + 53828.

It is an arithmetic number, because the mean of its divisors is an integer number (95795157).

Almost surely, 2^478926845 is an apocalyptic number.

It is an amenable number.

478926845 is a deficient number, since it is larger than the sum of its proper divisors (95844097).

478926845 is an frugal number, since it uses more digits than its factorization.

478926845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19579 (or 9792 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 53.

The square root of 478926845 is about 21884.3972957904. The cubic root of 478926845 is about 782.3895845320.

The spelling of 478926845 in words is "four hundred seventy-eight million, nine hundred twenty-six thousand, eight hundred forty-five".