3871222949 has 32 divisors (see below), whose sum is σ = 4560095232. Its totient is φ = 3247200000.

The previous prime is 3871222919. The next prime is 3871222951. The reversal of 3871222949 is 9492221783.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-3871222949 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3871222919) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3144164 + ... + 3145394.

It is an arithmetic number, because the mean of its divisors is an integer number (142502976).

Almost surely, 2^3871222949 is an apocalyptic number.

It is an amenable number.

3871222949 is a deficient number, since it is larger than the sum of its proper divisors (688872283).

3871222949 is a wasteful number, since it uses less digits than its factorization.

3871222949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1577.

The product of its digits is 435456, while the sum is 47.

The square root of 3871222949 is about 62219.1525898577. The cubic root of 3871222949 is about 1570.1798310515.

The spelling of 3871222949 in words is "three billion, eight hundred seventy-one million, two hundred twenty-two thousand, nine hundred forty-nine".