439340947 has 2 divisors, whose sum is σ = 439340948. Its totient is φ = 439340946.

The previous prime is 439340927. The next prime is 439340977. The reversal of 439340947 is 749043934.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 439340947 - 2²⁷ = 305123219 is a prime.

It is not a weakly prime, because it can be changed into another prime (439340927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219670473 + 219670474.

It is an arithmetic number, because the mean of its divisors is an integer number (219670474).

Almost surely, 2^439340947 is an apocalyptic number.

439340947 is a deficient number, since it is larger than the sum of its proper divisors (1).

439340947 is an equidigital number, since it uses as much as digits as its factorization.

439340947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 326592, while the sum is 43.

The square root of 439340947 is about 20960.4615168655. The cubic root of 439340947 is about 760.2105528120.

The spelling of 439340947 in words is "four hundred thirty-nine million, three hundred forty thousand, nine hundred forty-seven".