3891469944 has 16 divisors (see below), whose sum is σ = 9728674920. Its totient is φ = 1297156640.

The previous prime is 3891469937. The next prime is 3891469957. The reversal of 3891469944 is 4499641983.

It is a super-3 number, since 3×3891469944³ (a number of 30 digits) contains 333 as substring.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81072267 + ... + 81072314.

Almost surely, 2^3891469944 is an apocalyptic number.

It is an amenable number.

3891469944 is an abundant number, since it is smaller than the sum of its proper divisors (5837204976).

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

3891469944 is a wasteful number, since it uses less digits than its factorization.

3891469944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162144590 (or 162144586 counting only the distinct ones).

The product of its digits is 6718464, while the sum is 57.

The square root of 3891469944 is about 62381.6474934736. The cubic root of 3891469944 is about 1572.9124868277.

The spelling of 3891469944 in words is "three billion, eight hundred ninety-one million, four hundred sixty-nine thousand, nine hundred forty-four".