969921 has 8 divisors (see below), whose sum is σ = 1436960. Its totient is φ = 646596.

The previous prime is 969919. The next prime is 969923. The reversal of 969921 is 129969.

969921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (969919) and next prime (969923).

It is not a de Polignac number, because 969921 - 2¹ = 969919 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (969923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17935 + ... + 17988.

It is an arithmetic number, because the mean of its divisors is an integer number (179620).

2⁹⁶⁹⁹²¹ is an apocalyptic number.

It is an amenable number.

969921 is a deficient number, since it is larger than the sum of its proper divisors (467039).

969921 is a wasteful number, since it uses less digits than its factorization.

969921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35932 (or 35926 counting only the distinct ones).

The product of its digits is 8748, while the sum is 36.

The square root of 969921 is about 984.8456731895. The cubic root of 969921 is about 98.9871424992.

The spelling of 969921 in words is "nine hundred sixty-nine thousand, nine hundred twenty-one".