2939398281 has 24 divisors (see below), whose sum is σ = 4463534880. Its totient is φ = 1911774240.

The previous prime is 2939398261. The next prime is 2939398291. The reversal of 2939398281 is 1828939392.

2939398281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-2939398281 is a prime.

It is a super-2 number, since 2×2939398281² = 17280124508691509922, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2939398261) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13006 + ... + 77768.

It is an arithmetic number, because the mean of its divisors is an integer number (185980620).

Almost surely, 2^2939398281 is an apocalyptic number.

It is an amenable number.

2939398281 is a deficient number, since it is larger than the sum of its proper divisors (1524136599).

2939398281 is an equidigital number, since it uses as much as digits as its factorization.

2939398281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64854 (or 64807 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 54.

The square root of 2939398281 is about 54216.2178780483. The cubic root of 2939398281 is about 1432.4720117335.

The spelling of 2939398281 in words is "two billion, nine hundred thirty-nine million, three hundred ninety-eight thousand, two hundred eighty-one".