2159964 has 18 divisors (see below), whose sum is σ = 5460000. Its totient is φ = 719976.

The previous prime is 2159959. The next prime is 2160001. The reversal of 2159964 is 4699512.

2159964 is a `hidden beast` number, since 2 + 1 + 599 + 64 = 666.

2159964 is digitally balanced in base 2 and base 5, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 59999 = 2159964 / (2 + 1 + 5 + 9 + 9 + 6 + 4).

It is a congruent number.

It is an unprimeable 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 5 ways as a sum of consecutive naturals, for example, 29964 + ... + 30035.

2^2159964 is an apocalyptic number.

It is an amenable number.

2159964 is an abundant number, since it is smaller than the sum of its proper divisors (3300036).

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

2159964 is a wasteful number, since it uses less digits than its factorization.

2159964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60009 (or 60004 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 2159964 is about 1469.6815981702. The cubic root of 2159964 is about 129.2653632530.

It can be divided in two parts, 215996 and 4, that added together give a cube (216000 = 60³).

The spelling of 2159964 in words is "two million, one hundred fifty-nine thousand, nine hundred sixty-four".