3221493727 has 8 divisors (see below), whose sum is σ = 3411983952. Its totient is φ = 3031113600.

The previous prime is 3221493713. The next prime is 3221493749. The reversal of 3221493727 is 7273941223.

It is a happy number.

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

It is not a de Polignac number, because 3221493727 - 2¹⁹ = 3220969439 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3221493727.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3221493707) 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, 37077 + ... + 88417.

It is an arithmetic number, because the mean of its divisors is an integer number (426497994).

Almost surely, 2^3221493727 is an apocalyptic number.

3221493727 is a deficient number, since it is larger than the sum of its proper divisors (190490225).

3221493727 is a wasteful number, since it uses less digits than its factorization.

3221493727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55049.

The product of its digits is 127008, while the sum is 40.

The square root of 3221493727 is about 56758.2040501635. The cubic root of 3221493727 is about 1476.9045552662.

The spelling of 3221493727 in words is "three billion, two hundred twenty-one million, four hundred ninety-three thousand, seven hundred twenty-seven".