939889 has 4 divisors (see below), whose sum is σ = 970240. Its totient is φ = 909540.

The previous prime is 939881. The next prime is 939901. The reversal of 939889 is 988939.

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, and also an emirpimes, since its reverse is a distinct semiprime: 988939 = 7 ⋅141277.

It is not a de Polignac number, because 939889 - 2³ = 939881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (939881) 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, 15129 + ... + 15190.

It is an arithmetic number, because the mean of its divisors is an integer number (242560).

2⁹³⁹⁸⁸⁹ is an apocalyptic number.

It is an amenable number.

939889 is a deficient number, since it is larger than the sum of its proper divisors (30351).

939889 is a wasteful number, since it uses less digits than its factorization.

939889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30350.

The product of its digits is 139968, while the sum is 46.

The square root of 939889 is about 969.4787259141. The cubic root of 939889 is about 97.9547549021.

The spelling of 939889 in words is "nine hundred thirty-nine thousand, eight hundred eighty-nine".