3949718913940 has 48 divisors (see below), whose sum is σ = 8365121130240. Its totient is φ = 1566464780160.

The previous prime is 3949718913919. The next prime is 3949718913953. The reversal of 3949718913940 is 493198179493.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66460 + ... + 2811379.

It is an arithmetic number, because the mean of its divisors is an integer number (174273356880).

Almost surely, 2^{3949718913940} is an apocalyptic number.

It is an amenable number.

3949718913940 is an abundant number, since it is smaller than the sum of its proper divisors (4415402216300).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3949718913940 is a wasteful number, since it uses less digits than its factorization.

3949718913940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2878432 (or 2878430 counting only the distinct ones).

The product of its (nonzero) digits is 52907904, while the sum is 67.

The spelling of 3949718913940 in words is "three trillion, nine hundred forty-nine billion, seven hundred eighteen million, nine hundred thirteen thousand, nine hundred forty".