3949911889450 has 24 divisors (see below), whose sum is σ = 7347318443532. Its totient is φ = 1579861029120.

The previous prime is 3949911889367. The next prime is 3949911889487. The reversal of 3949911889450 is 549881199493.

It can be written as a sum of positive squares in 6 ways, for example, as 323252513809 + 3626659375641 = 568553^2 + 1904379^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 3949911889450.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1821679 + ... + 3349378.

Almost surely, 2^{3949911889450} is an apocalyptic number.

3949911889450 is a deficient number, since it is larger than the sum of its proper divisors (3397406554082).

3949911889450 is a wasteful number, since it uses less digits than its factorization.

3949911889450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5186346 (or 5186341 counting only the distinct ones).

The product of its (nonzero) digits is 100776960, while the sum is 70.

The spelling of 3949911889450 in words is "three trillion, nine hundred forty-nine billion, nine hundred eleven million, eight hundred eighty-nine thousand, four hundred fifty".