7221409079 has 2 divisors, whose sum is σ = 7221409080. Its totient is φ = 7221409078.

The previous prime is 7221409057. The next prime is 7221409087. The reversal of 7221409079 is 9709041227.

It is a strong prime.

It is an emirp because it is prime and its reverse (9709041227) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7221409079 - 2²⁰ = 7220360503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7221409099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3610704539 + 3610704540.

It is an arithmetic number, because the mean of its divisors is an integer number (3610704540).

Almost surely, 2^7221409079 is an apocalyptic number.

7221409079 is a deficient number, since it is larger than the sum of its proper divisors (1).

7221409079 is an equidigital number, since it uses as much as digits as its factorization.

7221409079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 7221409079 is about 84978.8743100307. The cubic root of 7221409079 is about 1932.8907863178.

The spelling of 7221409079 in words is "seven billion, two hundred twenty-one million, four hundred nine thousand, seventy-nine".