129964 has 6 divisors (see below), whose sum is σ = 227444. Its totient is φ = 64980.

The previous prime is 129959. The next prime is 129967. The reversal of 129964 is 469921.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (129967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16242 + ... + 16249.

2¹²⁹⁹⁶⁴ is an apocalyptic number.

It is an amenable number.

129964 is a deficient number, since it is larger than the sum of its proper divisors (97480).

129964 is a wasteful number, since it uses less digits than its factorization.

129964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32495 (or 32493 counting only the distinct ones).

The product of its digits is 3888, while the sum is 31.

The square root of 129964 is about 360.5052010721. The cubic root of 129964 is about 50.6532936390.

It can be divided in two parts, 12996 and 4, that multiplied together give a square (51984 = 228²).

The spelling of 129964 in words is "one hundred twenty-nine thousand, nine hundred sixty-four".