7226420447 has 4 divisors (see below), whose sum is σ = 7459530816. Its totient is φ = 6993310080.

The previous prime is 7226420441. The next prime is 7226420471. The reversal of 7226420447 is 7440246227.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7440246227 = 22441 ⋅331547.

It is a cyclic number.

It is not a de Polignac number, because 7226420447 - 2²⁶ = 7159311583 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7226420447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7226420441) 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, 116555138 + ... + 116555199.

It is an arithmetic number, because the mean of its divisors is an integer number (1864882704).

Almost surely, 2^7226420447 is an apocalyptic number.

7226420447 is a deficient number, since it is larger than the sum of its proper divisors (233110369).

7226420447 is a wasteful number, since it uses less digits than its factorization.

7226420447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233110368.

The product of its (nonzero) digits is 150528, while the sum is 38.

The square root of 7226420447 is about 85008.3551599488. The cubic root of 7226420447 is about 1933.3377991342.

The spelling of 7226420447 in words is "seven billion, two hundred twenty-six million, four hundred twenty thousand, four hundred forty-seven".