2227639 has 2 divisors, whose sum is σ = 2227640. Its totient is φ = 2227638.

The previous prime is 2227627. The next prime is 2227649. The reversal of 2227639 is 9367222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2227639 - 2⁵ = 2227607 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2² + 2⁶ + 2¹⁴ + 7² + 6⁸ + 3¹² + 9² .

2227639 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2227639.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2227609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1113819 + 1113820.

It is an arithmetic number, because the mean of its divisors is an integer number (1113820).

2^2227639 is an apocalyptic number.

2227639 is a deficient number, since it is larger than the sum of its proper divisors (1).

2227639 is an equidigital number, since it uses as much as digits as its factorization.

2227639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 31.

The square root of 2227639 is about 1492.5277216856. The cubic root of 2227639 is about 130.6015318446.

The spelling of 2227639 in words is "two million, two hundred twenty-seven thousand, six hundred thirty-nine".