2221489379 has 2 divisors, whose sum is σ = 2221489380. Its totient is φ = 2221489378.

The previous prime is 2221489343. The next prime is 2221489411. The reversal of 2221489379 is 9739841222.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2221489379 - 2¹⁶ = 2221423843 is a prime.

It is a super-2 number, since 2×2221489379² = 9870030122019611282, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2221489079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110744689 + 1110744690.

It is an arithmetic number, because the mean of its divisors is an integer number (1110744690).

Almost surely, 2^2221489379 is an apocalyptic number.

2221489379 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221489379 is an equidigital number, since it uses as much as digits as its factorization.

2221489379 is an odious number, because the sum of its binary digits is odd.

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

The square root of 2221489379 is about 47132.6784619758. The cubic root of 2221489379 is about 1304.8124154070.

The spelling of 2221489379 in words is "two billion, two hundred twenty-one million, four hundred eighty-nine thousand, three hundred seventy-nine".