939657 has 4 divisors (see below), whose sum is σ = 1252880. Its totient is φ = 626436.

The previous prime is 939649. The next prime is 939661. The reversal of 939657 is 756939.

939657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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: 756939 = 3 ⋅252313.

It is not a de Polignac number, because 939657 - 2³ = 939649 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (939677) 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, 156607 + ... + 156612.

It is an arithmetic number, because the mean of its divisors is an integer number (313220).

2⁹³⁹⁶⁵⁷ is an apocalyptic number.

It is an amenable number.

939657 is a deficient number, since it is larger than the sum of its proper divisors (313223).

939657 is a wasteful number, since it uses less digits than its factorization.

939657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313222.

The product of its digits is 51030, while the sum is 39.

The square root of 939657 is about 969.3590666002. The cubic root of 939657 is about 97.9466945981.

It can be divided in two parts, 9396 and 57, that added together give a triangular number (9453 = T₁₃₇).

The spelling of 939657 in words is "nine hundred thirty-nine thousand, six hundred fifty-seven".