478720807 has 2 divisors, whose sum is σ = 478720808. Its totient is φ = 478720806.

The previous prime is 478720793. The next prime is 478720813. The reversal of 478720807 is 708027874.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 478720807 - 2⁷ = 478720679 is a prime.

It is a super-2 number, since 2×478720807² = 458347222109462498, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (478720007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239360403 + 239360404.

It is an arithmetic number, because the mean of its divisors is an integer number (239360404).

Almost surely, 2^478720807 is an apocalyptic number.

478720807 is a deficient number, since it is larger than the sum of its proper divisors (1).

478720807 is an equidigital number, since it uses as much as digits as its factorization.

478720807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 175616, while the sum is 43.

The square root of 478720807 is about 21879.6893716524. The cubic root of 478720807 is about 782.2773717733.

The spelling of 478720807 in words is "four hundred seventy-eight million, seven hundred twenty thousand, eight hundred seven".