2199929823 has 72 divisors (see below), whose sum is σ = 3993990000. Its totient is φ = 1156571136.

The previous prime is 2199929807. The next prime is 2199929861. The reversal of 2199929823 is 3289299912.

It is not a de Polignac number, because 2199929823 - 2⁴ = 2199929807 is a prime.

It is a super-2 number, since 2×2199929823² = 9679382452249622658, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2199929823.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2199925823) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2860383 + ... + 2861151.

Almost surely, 2^2199929823 is an apocalyptic number.

2199929823 is a deficient number, since it is larger than the sum of its proper divisors (1794060177).

2199929823 is a wasteful number, since it uses less digits than its factorization.

2199929823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1301 (or 1291 counting only the distinct ones).

The product of its digits is 1259712, while the sum is 54.

The square root of 2199929823 is about 46903.4095029349. The cubic root of 2199929823 is about 1300.5776176731.

The spelling of 2199929823 in words is "two billion, one hundred ninety-nine million, nine hundred twenty-nine thousand, eight hundred twenty-three".