939421 has 8 divisors (see below), whose sum is σ = 1098944. Its totient is φ = 786240.

The previous prime is 939413. The next prime is 939431. The reversal of 939421 is 124939.

It is a happy number.

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

It is not a de Polignac number, because 939421 - 2³ = 939413 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 939421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (939431) 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, 1260 + ... + 1861.

It is an arithmetic number, because the mean of its divisors is an integer number (137368).

2⁹³⁹⁴²¹ is an apocalyptic number.

It is an amenable number.

939421 is a deficient number, since it is larger than the sum of its proper divisors (159523).

939421 is a wasteful number, since it uses less digits than its factorization.

939421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3171.

The product of its digits is 1944, while the sum is 28.

The square root of 939421 is about 969.2373290376. The cubic root of 939421 is about 97.9384939620.

The spelling of 939421 in words is "nine hundred thirty-nine thousand, four hundred twenty-one".