439900379 has 2 divisors, whose sum is σ = 439900380. Its totient is φ = 439900378.

The previous prime is 439900343. The next prime is 439900387. The reversal of 439900379 is 973009934.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-439900379 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (439900319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219950189 + 219950190.

It is an arithmetic number, because the mean of its divisors is an integer number (219950190).

Almost surely, 2^439900379 is an apocalyptic number.

439900379 is a deficient number, since it is larger than the sum of its proper divisors (1).

439900379 is an equidigital number, since it uses as much as digits as its factorization.

439900379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 183708, while the sum is 44.

The square root of 439900379 is about 20973.8022065624. The cubic root of 439900379 is about 760.5330857094.

The spelling of 439900379 in words is "four hundred thirty-nine million, nine hundred thousand, three hundred seventy-nine".