939431 has 2 divisors, whose sum is σ = 939432. Its totient is φ = 939430.

The previous prime is 939413. The next prime is 939439. The reversal of 939431 is 134939.

Together with previous prime (939413) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 939431 - 2¹⁴ = 923047 is a prime.

It is a super-2 number, since 2×939431² = 1765061207522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 939394 and 939403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (939439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 469715 + 469716.

It is an arithmetic number, because the mean of its divisors is an integer number (469716).

2⁹³⁹⁴³¹ is an apocalyptic number.

939431 is a deficient number, since it is larger than the sum of its proper divisors (1).

939431 is an equidigital number, since it uses as much as digits as its factorization.

939431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2916, while the sum is 29.

The square root of 939431 is about 969.2424877191. The cubic root of 939431 is about 97.9388414744.

The spelling of 939431 in words is "nine hundred thirty-nine thousand, four hundred thirty-one".