2129959772 has 12 divisors (see below), whose sum is σ = 3739190280. Its totient is φ = 1061619696.

The previous prime is 2129959751. The next prime is 2129959787. The reversal of 2129959772 is 2779599212.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 838622 + ... + 841157.

It is an arithmetic number, because the mean of its divisors is an integer number (311599190).

Almost surely, 2^2129959772 is an apocalyptic number.

It is an amenable number.

2129959772 is a deficient number, since it is larger than the sum of its proper divisors (1609230508).

2129959772 is a wasteful number, since it uses less digits than its factorization.

2129959772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1680100 (or 1680098 counting only the distinct ones).

The product of its digits is 1428840, while the sum is 53.

The square root of 2129959772 is about 46151.4872133066. The cubic root of 2129959772 is about 1286.6402511274.

The spelling of 2129959772 in words is "two billion, one hundred twenty-nine million, nine hundred fifty-nine thousand, seven hundred seventy-two".