939613 has 2 divisors, whose sum is σ = 939614. Its totient is φ = 939612.

The previous prime is 939611. The next prime is 939623. The reversal of 939613 is 316939.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 822649 + 116964 = 907^2 + 342^2 .

It is a cyclic number.

It is not a de Polignac number, because 939613 - 2¹ = 939611 is a prime.

Together with 939611, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (939611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 469806 + 469807.

It is an arithmetic number, because the mean of its divisors is an integer number (469807).

2⁹³⁹⁶¹³ is an apocalyptic number.

It is an amenable number.

939613 is a deficient number, since it is larger than the sum of its proper divisors (1).

939613 is an equidigital number, since it uses as much as digits as its factorization.

939613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4374, while the sum is 31.

The square root of 939613 is about 969.3363709260. The cubic root of 939613 is about 97.9451657701.

It can be divided in two parts, 9396 and 13, that added together give a square (9409 = 97²).

The spelling of 939613 in words is "nine hundred thirty-nine thousand, six hundred thirteen".