939690 has 48 divisors (see below), whose sum is σ = 2501928. Its totient is φ = 244608.

The previous prime is 939677. The next prime is 939707. The reversal of 939690 is 96939.

It can be written as a sum of positive squares in 4 ways, for example, as 938961 + 729 = 969^2 + 27^2 .

It is a super-2 number, since 2×939690² = 1766034592200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

939690 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4672 + ... + 4868.

2⁹³⁹⁶⁹⁰ is an apocalyptic number.

939690 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 939690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1250964).

939690 is an abundant number, since it is smaller than the sum of its proper divisors (1562238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

939690 is a wasteful number, since it uses less digits than its factorization.

939690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263 (or 260 counting only the distinct ones).

The product of its (nonzero) digits is 13122, while the sum is 36.

The square root of 939690 is about 969.3760880071. The cubic root of 939690 is about 97.9478411878.

The spelling of 939690 in words is "nine hundred thirty-nine thousand, six hundred ninety".