3949876993 has 12 divisors (see below), whose sum is σ = 4068985428. Its totient is φ = 3832514400.

The previous prime is 3949876991. The next prime is 3949876999. The reversal of 3949876993 is 3996789493.

It can be written as a sum of positive squares in 2 ways, for example, as 3411961744 + 537915249 = 58412^2 + 23193^2 .

It is not a de Polignac number, because 3949876993 - 2¹ = 3949876991 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3949876991) 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 in 11 ways as a sum of consecutive naturals, for example, 4597798 + ... + 4598656.

It is an arithmetic number, because the mean of its divisors is an integer number (339082119).

Almost surely, 2^3949876993 is an apocalyptic number.

It is an amenable number.

3949876993 is a deficient number, since it is larger than the sum of its proper divisors (119108435).

3949876993 is an frugal number, since it uses more digits than its factorization.

3949876993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1872 (or 1013 counting only the distinct ones).

The product of its digits is 79361856, while the sum is 67.

The square root of 3949876993 is about 62848.0468511154. The cubic root of 3949876993 is about 1580.7427198967.

The spelling of 3949876993 in words is "three billion, nine hundred forty-nine million, eight hundred seventy-six thousand, nine hundred ninety-three".