2921972929 has 4 divisors (see below), whose sum is σ = 2934097540. Its totient is φ = 2909848320.

The previous prime is 2921972887. The next prime is 2921972951. The reversal of 2921972929 is 9292791292.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1636607025 + 1285365904 = 40455^2 + 35852^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2921972929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2921972959) 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, 6061944 + ... + 6062425.

It is an arithmetic number, because the mean of its divisors is an integer number (733524385).

Almost surely, 2^2921972929 is an apocalyptic number.

It is an amenable number.

2921972929 is a deficient number, since it is larger than the sum of its proper divisors (12124611).

2921972929 is a wasteful number, since it uses less digits than its factorization.

2921972929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12124610.

The product of its digits is 734832, while the sum is 52.

The square root of 2921972929 is about 54055.2766064517. The cubic root of 2921972929 is about 1429.6357376597.

The spelling of 2921972929 in words is "two billion, nine hundred twenty-one million, nine hundred seventy-two thousand, nine hundred twenty-nine".