389695439 has 4 divisors (see below), whose sum is σ = 445366224. Its totient is φ = 334024656.

The previous prime is 389695421. The next prime is 389695441. The reversal of 389695439 is 934596983.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 934596983 = 383 ⋅2440201.

It is not a de Polignac number, because 389695439 - 2⁸ = 389695183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389695459) 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, 27835382 + ... + 27835395.

It is an arithmetic number, because the mean of its divisors is an integer number (111341556).

Almost surely, 2^389695439 is an apocalyptic number.

389695439 is a deficient number, since it is larger than the sum of its proper divisors (55670785).

389695439 is an equidigital number, since it uses as much as digits as its factorization.

389695439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55670784.

The product of its digits is 6298560, while the sum is 56.

The square root of 389695439 is about 19740.7051292501. The cubic root of 389695439 is about 730.4241227162.

The spelling of 389695439 in words is "three hundred eighty-nine million, six hundred ninety-five thousand, four hundred thirty-nine".