3220249791 has 32 divisors (see below), whose sum is σ = 4799950848. Its totient is φ = 1903638240.

The previous prime is 3220249777. The next prime is 3220249807. The reversal of 3220249791 is 1979420223.

It is not a de Polignac number, because 3220249791 - 2⁵ = 3220249759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3220249771) 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, 472776 + ... + 479538.

It is an arithmetic number, because the mean of its divisors is an integer number (149998464).

Almost surely, 2^3220249791 is an apocalyptic number.

3220249791 is a deficient number, since it is larger than the sum of its proper divisors (1579701057).

3220249791 is a wasteful number, since it uses less digits than its factorization.

3220249791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7131.

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 3220249791 is about 56747.2447877428. The cubic root of 3220249791 is about 1476.7144352558.

The spelling of 3220249791 in words is "three billion, two hundred twenty million, two hundred forty-nine thousand, seven hundred ninety-one".