3947573689 has 8 divisors (see below), whose sum is σ = 4182796800. Its totient is φ = 3712685376.

The previous prime is 3947573687. The next prime is 3947573731. The reversal of 3947573689 is 9863757493.

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 3947573689 - 2¹ = 3947573687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3947573687) 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, 59209 + ... + 106774.

It is an arithmetic number, because the mean of its divisors is an integer number (522849600).

Almost surely, 2^3947573689 is an apocalyptic number.

It is an amenable number.

3947573689 is a deficient number, since it is larger than the sum of its proper divisors (235223111).

3947573689 is a wasteful number, since it uses less digits than its factorization.

3947573689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167399.

The product of its digits is 34292160, while the sum is 61.

The square root of 3947573689 is about 62829.7197908760. The cubic root of 3947573689 is about 1580.4353990206.

The spelling of 3947573689 in words is "three billion, nine hundred forty-seven million, five hundred seventy-three thousand, six hundred eighty-nine".