439397377 has 4 divisors (see below), whose sum is σ = 439439940. Its totient is φ = 439354816.

The previous prime is 439397347. The next prime is 439397381. The reversal of 439397377 is 773793934.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 773793934 = 2 ⋅386896967.

It can be written as a sum of positive squares in 2 ways, for example, as 322238401 + 117158976 = 17951^2 + 10824^2 .

It is a cyclic number.

It is not a de Polignac number, because 439397377 - 2¹⁹ = 438873089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (439397327) 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, 5133 + ... + 30085.

It is an arithmetic number, because the mean of its divisors is an integer number (109859985).

Almost surely, 2^439397377 is an apocalyptic number.

It is an amenable number.

439397377 is a deficient number, since it is larger than the sum of its proper divisors (42563).

439397377 is a wasteful number, since it uses less digits than its factorization.

439397377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42562.

The product of its digits is 3000564, while the sum is 52.

The square root of 439397377 is about 20961.8075795004. The cubic root of 439397377 is about 760.2430991713.

The spelling of 439397377 in words is "four hundred thirty-nine million, three hundred ninety-seven thousand, three hundred seventy-seven".