2721362447 has 2 divisors, whose sum is σ = 2721362448. Its totient is φ = 2721362446.

The previous prime is 2721362393. The next prime is 2721362471. The reversal of 2721362447 is 7442631272.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2721362447 - 2²² = 2717168143 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2721362447.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2721362747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1360681223 + 1360681224.

It is an arithmetic number, because the mean of its divisors is an integer number (1360681224).

Almost surely, 2^2721362447 is an apocalyptic number.

2721362447 is a deficient number, since it is larger than the sum of its proper divisors (1).

2721362447 is an equidigital number, since it uses as much as digits as its factorization.

2721362447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 112896, while the sum is 38.

The square root of 2721362447 is about 52166.6794707120. The cubic root of 2721362447 is about 1396.1394401469.

The spelling of 2721362447 in words is "two billion, seven hundred twenty-one million, three hundred sixty-two thousand, four hundred forty-seven".