439049899 has 2 divisors, whose sum is σ = 439049900. Its totient is φ = 439049898.

The previous prime is 439049801. The next prime is 439049903. The reversal of 439049899 is 998940934.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-439049899 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (439049999) 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 as a sum of consecutive naturals, namely, 219524949 + 219524950.

It is an arithmetic number, because the mean of its divisors is an integer number (219524950).

Almost surely, 2^439049899 is an apocalyptic number.

439049899 is a deficient number, since it is larger than the sum of its proper divisors (1).

439049899 is an equidigital number, since it uses as much as digits as its factorization.

439049899 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2519424, while the sum is 55.

The square root of 439049899 is about 20953.5175805878. The cubic root of 439049899 is about 760.0426447678.

It can be divided in two parts, 4390 and 49899, that added together give a square (54289 = 233²).

The spelling of 439049899 in words is "four hundred thirty-nine million, forty-nine thousand, eight hundred ninety-nine".