3971529493 has 8 divisors (see below), whose sum is σ = 4163011776. Its totient is φ = 3784552800.

The previous prime is 3971529487. The next prime is 3971529521. The reversal of 3971529493 is 3949251793.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 3971529493 - 2²⁹ = 3434658581 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3971529493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3971529413) 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, 1124593 + ... + 1128118.

It is an arithmetic number, because the mean of its divisors is an integer number (520376472).

Almost surely, 2^3971529493 is an apocalyptic number.

It is an amenable number.

3971529493 is a deficient number, since it is larger than the sum of its proper divisors (191482283).

3971529493 is a wasteful number, since it uses less digits than its factorization.

3971529493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2252795.

The product of its digits is 1837080, while the sum is 52.

The square root of 3971529493 is about 63020.0721437226. The cubic root of 3971529493 is about 1583.6259049916.

The spelling of 3971529493 in words is "three billion, nine hundred seventy-one million, five hundred twenty-nine thousand, four hundred ninety-three".