478277777939 has 16 divisors (see below), whose sum is σ = 517288158912. Its totient is φ = 439585947648.

The previous prime is 478277777867. The next prime is 478277777981. The reversal of 478277777939 is 939777772874.

It is a cyclic number.

It is not a de Polignac number, because 478277777939 - 2¹⁶ = 478277712403 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 478277777939.

It is not an unprimeable number, because it can be changed into a prime (478277777539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8333927 + ... + 8391119.

It is an arithmetic number, because the mean of its divisors is an integer number (32330509932).

Almost surely, 2^478277777939 is an apocalyptic number.

478277777939 is a deficient number, since it is larger than the sum of its proper divisors (39010380973).

478277777939 is a wasteful number, since it uses less digits than its factorization.

478277777939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59966.

The product of its digits is 1829677248, while the sum is 77.

The spelling of 478277777939 in words is "four hundred seventy-eight billion, two hundred seventy-seven million, seven hundred seventy-seven thousand, nine hundred thirty-nine".