19222429 has 2 divisors, whose sum is σ = 19222430. Its totient is φ = 19222428.

The previous prime is 19222417. The next prime is 19222507. The reversal of 19222429 is 92422291.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18062500 + 1159929 = 4250^2 + 1077^2 .

It is a cyclic number.

It is not a de Polignac number, because 19222429 - 2¹⁵ = 19189661 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19222429.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19222409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9611214 + 9611215.

It is an arithmetic number, because the mean of its divisors is an integer number (9611215).

Almost surely, 2^19222429 is an apocalyptic number.

It is an amenable number.

19222429 is a deficient number, since it is larger than the sum of its proper divisors (1).

19222429 is an equidigital number, since it uses as much as digits as its factorization.

19222429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 31.

The square root of 19222429 is about 4384.3390607935. The cubic root of 19222429 is about 267.8774082885.

The spelling of 19222429 in words is "nineteen million, two hundred twenty-two thousand, four hundred twenty-nine".