7221440479 has 16 divisors (see below), whose sum is σ = 8442639360. Its totient is φ = 6109788960.

The previous prime is 7221440477. The next prime is 7221440503. The reversal of 7221440479 is 9740441227.

It is a happy number.

It is not a de Polignac number, because 7221440479 - 2¹ = 7221440477 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 (7221440477) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 376359 + ... + 395080.

It is an arithmetic number, because the mean of its divisors is an integer number (527664960).

Almost surely, 2^7221440479 is an apocalyptic number.

7221440479 is a deficient number, since it is larger than the sum of its proper divisors (1221198881).

7221440479 is a wasteful number, since it uses less digits than its factorization.

7221440479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771510.

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 7221440479 is about 84979.0590616300. The cubic root of 7221440479 is about 1932.8935878339.

The spelling of 7221440479 in words is "seven billion, two hundred twenty-one million, four hundred forty thousand, four hundred seventy-nine".