3895249447 has 4 divisors (see below), whose sum is σ = 3901423216. Its totient is φ = 3889075680.

The previous prime is 3895249429. The next prime is 3895249459. The reversal of 3895249447 is 7449425983.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3895249447 - 2²⁷ = 3761031719 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 (3895249487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3085938 + ... + 3087199.

It is an arithmetic number, because the mean of its divisors is an integer number (975355804).

Almost surely, 2^3895249447 is an apocalyptic number.

3895249447 is a deficient number, since it is larger than the sum of its proper divisors (6173769).

3895249447 is an equidigital number, since it uses as much as digits as its factorization.

3895249447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6173768.

The product of its digits is 8709120, while the sum is 55.

The square root of 3895249447 is about 62411.9335303754. The cubic root of 3895249447 is about 1573.4215407322.

The spelling of 3895249447 in words is "three billion, eight hundred ninety-five million, two hundred forty-nine thousand, four hundred forty-seven".