439397 has 8 divisors (see below), whose sum is σ = 514752. Its totient is φ = 367200.

The previous prime is 439381. The next prime is 439409. The reversal of 439397 is 793934.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 439397 - 2⁴ = 439381 is a prime.

It is a d-powerful number, because it can be written as 4⁹ + 3⁴ + 3¹¹ + 9 + 9 + 7 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (439357) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 479 + ... + 1052.

It is an arithmetic number, because the mean of its divisors is an integer number (64344).

2⁴³⁹³⁹⁷ is an apocalyptic number.

It is an amenable number.

439397 is a deficient number, since it is larger than the sum of its proper divisors (75355).

439397 is a wasteful number, since it uses less digits than its factorization.

439397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1579.

The product of its digits is 20412, while the sum is 35.

The square root of 439397 is about 662.8702738847. The cubic root of 439397 is about 76.0242881743.

The spelling of 439397 in words is "four hundred thirty-nine thousand, three hundred ninety-seven".