189964 has 6 divisors (see below), whose sum is σ = 332444. Its totient is φ = 94980.

The previous prime is 189961. The next prime is 189967. The reversal of 189964 is 469981.

189964 is digitally balanced in base 3, 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 (189961) and next prime (189967).

It is not an unprimeable number, because it can be changed into a prime (189961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23742 + ... + 23749.

2¹⁸⁹⁹⁶⁴ is an apocalyptic number.

It is an amenable number.

189964 is a deficient number, since it is larger than the sum of its proper divisors (142480).

189964 is a wasteful number, since it uses less digits than its factorization.

189964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47495 (or 47493 counting only the distinct ones).

The product of its digits is 15552, while the sum is 37.

The square root of 189964 is about 435.8485975657. The cubic root of 189964 is about 57.4853396777.

The spelling of 189964 in words is "one hundred eighty-nine thousand, nine hundred sixty-four".