2983940393921 has 2 divisors, whose sum is σ = 2983940393922. Its totient is φ = 2983940393920.

The previous prime is 2983940393869. The next prime is 2983940393957. The reversal of 2983940393921 is 1293930493892.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2978692840321 + 5247553600 = 1725889^2 + 72440^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2983940393921 is a prime.

It is not a weakly prime, because it can be changed into another prime (2983900393921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1491970196960 + 1491970196961.

It is an arithmetic number, because the mean of its divisors is an integer number (1491970196961).

Almost surely, 2^{2983940393921} is an apocalyptic number.

It is an amenable number.

2983940393921 is a deficient number, since it is larger than the sum of its proper divisors (1).

2983940393921 is an equidigital number, since it uses as much as digits as its factorization.

2983940393921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22674816, while the sum is 62.

The spelling of 2983940393921 in words is "two trillion, nine hundred eighty-three billion, nine hundred forty million, three hundred ninety-three thousand, nine hundred twenty-one".