479443439 has 2 divisors, whose sum is σ = 479443440. Its totient is φ = 479443438.

The previous prime is 479443429. The next prime is 479443451. The reversal of 479443439 is 934344974.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 479443439 - 2¹² = 479439343 is a prime.

It is a super-2 number, since 2×479443439² = 459732022400293442, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 479443393 and 479443402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (479443429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239721719 + 239721720.

It is an arithmetic number, because the mean of its divisors is an integer number (239721720).

Almost surely, 2^479443439 is an apocalyptic number.

479443439 is a deficient number, since it is larger than the sum of its proper divisors (1).

479443439 is an equidigital number, since it uses as much as digits as its factorization.

479443439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1306368, while the sum is 47.

The square root of 479443439 is about 21896.1969072257. The cubic root of 479443439 is about 782.6707913832.

The spelling of 479443439 in words is "four hundred seventy-nine million, four hundred forty-three thousand, four hundred thirty-nine".