2946924988921 has 3 divisors (see below), whose sum is σ = 2946926705583. Its totient is φ = 2946923272260.

The previous prime is 2946924988883. The next prime is 2946924988949. The reversal of 2946924988921 is 1298894296492.

The square root of 2946924988921 is 1716661.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 2871706441321 + 75218547600 = 1694611^2 + 274260^2 .

It is not a de Polignac number, because 2946924988921 - 2²¹ = 2946922891769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2946924988961) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 858331 + ... + 2574991.

It is an arithmetic number, because the mean of its divisors is an integer number (982308901861).

Almost surely, 2^{2946924988921} is an apocalyptic number.

2946924988921 is the 1716661-st square number.

2946924988921 is the 858331-st centered octagonal number.

It is an amenable number.

2946924988921 is a deficient number, since it is larger than the sum of its proper divisors (1716662).

2946924988921 is an frugal number, since it uses more digits than its factorization.

2946924988921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3433322 (or 1716661 counting only the distinct ones).

The product of its digits is 322486272, while the sum is 73.

The spelling of 2946924988921 in words is "two trillion, nine hundred forty-six billion, nine hundred twenty-four million, nine hundred eighty-eight thousand, nine hundred twenty-one".