22649479 has 2 divisors, whose sum is σ = 22649480. Its totient is φ = 22649478.

The previous prime is 22649477. The next prime is 22649489. The reversal of 22649479 is 97494622.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22649479 - 2¹ = 22649477 is a prime.

Together with 22649477, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22649477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11324739 + 11324740.

It is an arithmetic number, because the mean of its divisors is an integer number (11324740).

Almost surely, 2^22649479 is an apocalyptic number.

22649479 is a deficient number, since it is larger than the sum of its proper divisors (1).

22649479 is an equidigital number, since it uses as much as digits as its factorization.

22649479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 43.

The square root of 22649479 is about 4759.1468773300. The cubic root of 22649479 is about 282.9346076233.

The spelling of 22649479 in words is "twenty-two million, six hundred forty-nine thousand, four hundred seventy-nine".