3869221147 has 4 divisors (see below), whose sum is σ = 4220968536. Its totient is φ = 3517473760.

The previous prime is 3869221133. The next prime is 3869221201. The reversal of 3869221147 is 7411229683.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3869221147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3869221247) 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, 175873678 + ... + 175873699.

It is an arithmetic number, because the mean of its divisors is an integer number (1055242134).

Almost surely, 2^3869221147 is an apocalyptic number.

3869221147 is a deficient number, since it is larger than the sum of its proper divisors (351747389).

3869221147 is a wasteful number, since it uses less digits than its factorization.

3869221147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351747388.

The product of its digits is 145152, while the sum is 43.

The square root of 3869221147 is about 62203.0638071791. The cubic root of 3869221147 is about 1569.9091387231.

The spelling of 3869221147 in words is "three billion, eight hundred sixty-nine million, two hundred twenty-one thousand, one hundred forty-seven".