2921883994 has 4 divisors (see below), whose sum is σ = 4382825994. Its totient is φ = 1460941996.

The previous prime is 2921883971. The next prime is 2921883997. The reversal of 2921883994 is 4993881292.

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

It can be written as a sum of positive squares in only one way, i.e., 2073618369 + 848265625 = 45537^2 + 29125^2 .

It is not an unprimeable number, because it can be changed into a prime (2921883997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 730470997 + ... + 730471000.

Almost surely, 2^2921883994 is an apocalyptic number.

2921883994 is a deficient number, since it is larger than the sum of its proper divisors (1460942000).

2921883994 is a wasteful number, since it uses less digits than its factorization.

2921883994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1460941999.

The product of its digits is 2239488, while the sum is 55.

The square root of 2921883994 is about 54054.4539700476. The cubic root of 2921883994 is about 1429.6212330827.

The spelling of 2921883994 in words is "two billion, nine hundred twenty-one million, eight hundred eighty-three thousand, nine hundred ninety-four".