439745398 has 4 divisors (see below), whose sum is σ = 659618100. Its totient is φ = 219872698.

The previous prime is 439745389. The next prime is 439745417. The reversal of 439745398 is 893547934.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

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, 109936348 + ... + 109936351.

It is an arithmetic number, because the mean of its divisors is an integer number (164904525).

Almost surely, 2^439745398 is an apocalyptic number.

439745398 is a deficient number, since it is larger than the sum of its proper divisors (219872702).

439745398 is a wasteful number, since it uses less digits than its factorization.

439745398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219872701.

The product of its digits is 3265920, while the sum is 52.

The square root of 439745398 is about 20970.1072481759. The cubic root of 439745398 is about 760.4437609225.

The spelling of 439745398 in words is "four hundred thirty-nine million, seven hundred forty-five thousand, three hundred ninety-eight".