3947089853 has 8 divisors (see below), whose sum is σ = 4511639808. Its totient is φ = 3382709904.

The previous prime is 3947089843. The next prime is 3947089859. The reversal of 3947089853 is 3589807493.

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

It is not a de Polignac number, because 3947089853 - 2⁶ = 3947089789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3947089859) 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, 11900 + ... + 89642.

It is an arithmetic number, because the mean of its divisors is an integer number (563954976).

Almost surely, 2^3947089853 is an apocalyptic number.

It is an amenable number.

3947089853 is a deficient number, since it is larger than the sum of its proper divisors (564549955).

3947089853 is an equidigital number, since it uses as much as digits as its factorization.

3947089853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85003.

The product of its (nonzero) digits is 6531840, while the sum is 56.

The square root of 3947089853 is about 62825.8692976070. The cubic root of 3947089853 is about 1580.3708274765.

The spelling of 3947089853 in words is "three billion, nine hundred forty-seven million, eighty-nine thousand, eight hundred fifty-three".