3981435472 has 40 divisors (see below), whose sum is σ = 8982389376. Its totient is φ = 1674132096.

The previous prime is 3981435457. The next prime is 3981435487. The reversal of 3981435472 is 2745341893.

It is an interprime number because it is at equal distance from previous prime (3981435457) and next prime (3981435487).

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 329428 + ... + 341299.

Almost surely, 2^3981435472 is an apocalyptic number.

It is an amenable number.

3981435472 is an abundant number, since it is smaller than the sum of its proper divisors (5000953904).

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

3981435472 is a wasteful number, since it uses less digits than its factorization.

3981435472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670795 (or 670789 counting only the distinct ones).

The product of its digits is 725760, while the sum is 46.

The square root of 3981435472 is about 63098.6170371427. The cubic root of 3981435472 is about 1584.9414636703.

It can be divided in two parts, 39814354 and 72, that added together give a triangular number (39814426 = T₈₉₂₃).

The spelling of 3981435472 in words is "three billion, nine hundred eighty-one million, four hundred thirty-five thousand, four hundred seventy-two".