3981494445 has 8 divisors (see below), whose sum is σ = 6370391136. Its totient is φ = 2123463696.

The previous prime is 3981494443. The next prime is 3981494453. The reversal of 3981494445 is 5444941893.

3981494445 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3981494445 - 2¹ = 3981494443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3981494443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132716467 + ... + 132716496.

It is an arithmetic number, because the mean of its divisors is an integer number (796298892).

Almost surely, 2^3981494445 is an apocalyptic number.

It is an amenable number.

3981494445 is a deficient number, since it is larger than the sum of its proper divisors (2388896691).

3981494445 is a wasteful number, since it uses less digits than its factorization.

3981494445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265432971.

The product of its digits is 2488320, while the sum is 51.

The square root of 3981494445 is about 63099.0843435941. The cubic root of 3981494445 is about 1584.9492890130.

The spelling of 3981494445 in words is "three billion, nine hundred eighty-one million, four hundred ninety-four thousand, four hundred forty-five".