22019969 has 2 divisors, whose sum is σ = 22019970. Its totient is φ = 22019968.

The previous prime is 22019941. The next prime is 22019989. The reversal of 22019969 is 96991022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21049744 + 970225 = 4588^2 + 985^2 .

It is a cyclic number.

It is not a de Polignac number, because 22019969 - 2⁸ = 22019713 is a prime.

It is a super-2 number, since 2×22019969² = 969758069521922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22019909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11009984 + 11009985.

It is an arithmetic number, because the mean of its divisors is an integer number (11009985).

Almost surely, 2^22019969 is an apocalyptic number.

It is an amenable number.

22019969 is a deficient number, since it is larger than the sum of its proper divisors (1).

22019969 is an equidigital number, since it uses as much as digits as its factorization.

22019969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 38.

The square root of 22019969 is about 4692.5439795488. The cubic root of 22019969 is about 280.2886860996.

The spelling of 22019969 in words is "twenty-two million, nineteen thousand, nine hundred sixty-nine".