3949956885407 has 16 divisors (see below), whose sum is σ = 4484478768000. Its totient is φ = 3448971568224.

The previous prime is 3949956885403. The next prime is 3949956885409. The reversal of 3949956885407 is 7045886599493.

It is not a de Polignac number, because 3949956885407 - 2² = 3949956885403 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3949956885403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11970557 + ... + 12296102.

It is an arithmetic number, because the mean of its divisors is an integer number (280279923000).

Almost surely, 2^{3949956885407} is an apocalyptic number.

3949956885407 is a deficient number, since it is larger than the sum of its proper divisors (534521882593).

3949956885407 is a wasteful number, since it uses less digits than its factorization.

3949956885407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24267350.

The product of its (nonzero) digits is 2351462400, while the sum is 77.

The spelling of 3949956885407 in words is "three trillion, nine hundred forty-nine billion, nine hundred fifty-six million, eight hundred eighty-five thousand, four hundred seven".