478376539 has 2 divisors, whose sum is σ = 478376540. Its totient is φ = 478376538.

The previous prime is 478376537. The next prime is 478376551. The reversal of 478376539 is 935673874.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 478376539 - 2¹ = 478376537 is a prime.

It is a super-2 number, since 2×478376539² = 457688226131237042, which contains 22 as substring.

Together with 478376537, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (478376533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239188269 + 239188270.

It is an arithmetic number, because the mean of its divisors is an integer number (239188270).

Almost surely, 2^478376539 is an apocalyptic number.

478376539 is a deficient number, since it is larger than the sum of its proper divisors (1).

478376539 is an equidigital number, since it uses as much as digits as its factorization.

478376539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3810240, while the sum is 52.

The square root of 478376539 is about 21871.8206603840. The cubic root of 478376539 is about 782.0898040956.

The spelling of 478376539 in words is "four hundred seventy-eight million, three hundred seventy-six thousand, five hundred thirty-nine".