19442969 has 8 divisors (see below), whose sum is σ = 23929920. Its totient is φ = 15383376.

The previous prime is 19442959. The next prime is 19442977. The reversal of 19442969 is 96924491.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19442969 - 2⁴ = 19442953 is a prime.

It is a super-2 number, since 2×19442969² = 756058087069922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19442939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106739 + ... + 106920.

It is an arithmetic number, because the mean of its divisors is an integer number (2991240).

Almost surely, 2^19442969 is an apocalyptic number.

It is an amenable number.

19442969 is a deficient number, since it is larger than the sum of its proper divisors (4486951).

19442969 is a wasteful number, since it uses less digits than its factorization.

19442969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213679.

The product of its digits is 139968, while the sum is 44.

The square root of 19442969 is about 4409.4182155926. The cubic root of 19442969 is about 268.8979726673.

It can be divided in two parts, 1944 and 2969, that added together give a cube (4913 = 17³).

The spelling of 19442969 in words is "nineteen million, four hundred forty-two thousand, nine hundred sixty-nine".