439384907929 has 4 divisors (see below), whose sum is σ = 479328990480. Its totient is φ = 399440825380.

The previous prime is 439384907891. The next prime is 439384907957. The reversal of 439384907929 is 929709483934.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-439384907929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (439384907729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19972041259 + ... + 19972041280.

It is an arithmetic number, because the mean of its divisors is an integer number (119832247620).

Almost surely, 2^439384907929 is an apocalyptic number.

It is an amenable number.

439384907929 is a deficient number, since it is larger than the sum of its proper divisors (39944082551).

439384907929 is a wasteful number, since it uses less digits than its factorization.

439384907929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39944082550.

The product of its (nonzero) digits is 105815808, while the sum is 67.

The spelling of 439384907929 in words is "four hundred thirty-nine billion, three hundred eighty-four million, nine hundred seven thousand, nine hundred twenty-nine".