22919419 has 2 divisors, whose sum is σ = 22919420. Its totient is φ = 22919418.

The previous prime is 22919411. The next prime is 22919437. The reversal of 22919419 is 91491922.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22919419 - 2³ = 22919411 is a prime.

It is a super-2 number, since 2×22919419² = 1050599534595122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22919411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11459709 + 11459710.

It is an arithmetic number, because the mean of its divisors is an integer number (11459710).

Almost surely, 2^22919419 is an apocalyptic number.

22919419 is a deficient number, since it is larger than the sum of its proper divisors (1).

22919419 is an equidigital number, since it uses as much as digits as its factorization.

22919419 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 37.

The square root of 22919419 is about 4787.4230019918. The cubic root of 22919419 is about 284.0541910410.

The spelling of 22919419 in words is "twenty-two million, nine hundred nineteen thousand, four hundred nineteen".