2176929389 has 4 divisors (see below), whose sum is σ = 2291504640. Its totient is φ = 2062354140.

The previous prime is 2176929379. The next prime is 2176929413. The reversal of 2176929389 is 9839296712.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2176929389 - 2⁸ = 2176929133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2176929379) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57287597 + ... + 57287634.

It is an arithmetic number, because the mean of its divisors is an integer number (572876160).

Almost surely, 2^2176929389 is an apocalyptic number.

It is an amenable number.

2176929389 is a deficient number, since it is larger than the sum of its proper divisors (114575251).

2176929389 is a wasteful number, since it uses less digits than its factorization.

2176929389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114575250.

The product of its digits is 2939328, while the sum is 56.

The square root of 2176929389 is about 46657.5759014546. The cubic root of 2176929389 is about 1296.0291831960.

The spelling of 2176929389 in words is "two billion, one hundred seventy-six million, nine hundred twenty-nine thousand, three hundred eighty-nine".