2940064221 has 4 divisors (see below), whose sum is σ = 3920085632. Its totient is φ = 1960042812.

The previous prime is 2940064213. The next prime is 2940064229. The reversal of 2940064221 is 1224600492.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (2940064213) and next prime (2940064229).

It is not a de Polignac number, because 2940064221 - 2³ = 2940064213 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 (2940064229) 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, 490010701 + ... + 490010706.

It is an arithmetic number, because the mean of its divisors is an integer number (980021408).

Almost surely, 2^2940064221 is an apocalyptic number.

It is an amenable number.

2940064221 is a deficient number, since it is larger than the sum of its proper divisors (980021411).

2940064221 is an equidigital number, since it uses as much as digits as its factorization.

2940064221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 980021410.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 2940064221 is about 54222.3590504877. The cubic root of 2940064221 is about 1432.5801822148.

The spelling of 2940064221 in words is "two billion, nine hundred forty million, sixty-four thousand, two hundred twenty-one".