939961 has 4 divisors (see below), whose sum is σ = 1025424. Its totient is φ = 854500.

The previous prime is 939931. The next prime is 939971. The reversal of 939961 is 169939.

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.

It is a cyclic number.

It is not a de Polignac number, because 939961 - 2¹⁹ = 415673 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 939961.

It is not an unprimeable number, because it can be changed into a prime (939901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42715 + ... + 42736.

It is an arithmetic number, because the mean of its divisors is an integer number (256356).

2⁹³⁹⁹⁶¹ is an apocalyptic number.

It is an amenable number.

939961 is a deficient number, since it is larger than the sum of its proper divisors (85463).

939961 is a wasteful number, since it uses less digits than its factorization.

939961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85462.

The product of its digits is 13122, while the sum is 37.

The square root of 939961 is about 969.5158585603. The cubic root of 939961 is about 97.9572561061.

The spelling of 939961 in words is "nine hundred thirty-nine thousand, nine hundred sixty-one".