439393361 has 4 divisors (see below), whose sum is σ = 479338224. Its totient is φ = 399448500.

The previous prime is 439393337. The next prime is 439393379. The reversal of 439393361 is 163393934.

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 de Polignac number, because none of the positive numbers 2^k-439393361 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (439393301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19972415 + ... + 19972436.

It is an arithmetic number, because the mean of its divisors is an integer number (119834556).

Almost surely, 2^439393361 is an apocalyptic number.

It is an amenable number.

439393361 is a deficient number, since it is larger than the sum of its proper divisors (39944863).

439393361 is a wasteful number, since it uses less digits than its factorization.

439393361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39944862.

The product of its digits is 157464, while the sum is 41.

The square root of 439393361 is about 20961.7117860160. The cubic root of 439393361 is about 760.2407830100.

The spelling of 439393361 in words is "four hundred thirty-nine million, three hundred ninety-three thousand, three hundred sixty-one".