3949613831 has 2 divisors, whose sum is σ = 3949613832. Its totient is φ = 3949613830.

The previous prime is 3949613777. The next prime is 3949613903. The reversal of 3949613831 is 1383169493.

3949613831 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (1383169493) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3949613831 - 2¹⁴ = 3949597447 is a prime.

It is a super-2 number, since 2×3949613831² = 31198898828052993122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3949613131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1974806915 + 1974806916.

It is an arithmetic number, because the mean of its divisors is an integer number (1974806916).

Almost surely, 2^3949613831 is an apocalyptic number.

3949613831 is a deficient number, since it is larger than the sum of its proper divisors (1).

3949613831 is an equidigital number, since it uses as much as digits as its factorization.

3949613831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 419904, while the sum is 47.

The square root of 3949613831 is about 62845.9531791825. The cubic root of 3949613831 is about 1580.7076132630.

The spelling of 3949613831 in words is "three billion, nine hundred forty-nine million, six hundred thirteen thousand, eight hundred thirty-one".