4396221913 has 4 divisors (see below), whose sum is σ = 4654823220. Its totient is φ = 4137620608.

The previous prime is 4396221889. The next prime is 4396221961. The reversal of 4396221913 is 3191226934.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3035128464 + 1361093449 = 55092^2 + 36893^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4396221913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4396221113) 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, 129300628 + ... + 129300661.

It is an arithmetic number, because the mean of its divisors is an integer number (1163705805).

Almost surely, 2^4396221913 is an apocalyptic number.

It is an amenable number.

4396221913 is a deficient number, since it is larger than the sum of its proper divisors (258601307).

4396221913 is a wasteful number, since it uses less digits than its factorization.

4396221913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258601306.

The product of its digits is 69984, while the sum is 40.

The square root of 4396221913 is about 66304.0112889107. The cubic root of 4396221913 is about 1638.1733967400.

The spelling of 4396221913 in words is "four billion, three hundred ninety-six million, two hundred twenty-one thousand, nine hundred thirteen".