19798229 has 4 divisors (see below), whose sum is σ = 21598080. Its totient is φ = 17998380.

The previous prime is 19798223. The next prime is 19798237. The reversal of 19798229 is 92289791.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 19798229 - 2¹² = 19794133 is a prime.

It is a super-3 number, since 3×19798229³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19798223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 899909 + ... + 899930.

It is an arithmetic number, because the mean of its divisors is an integer number (5399520).

Almost surely, 2^19798229 is an apocalyptic number.

It is an amenable number.

19798229 is a deficient number, since it is larger than the sum of its proper divisors (1799851).

19798229 is a wasteful number, since it uses less digits than its factorization.

19798229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1799850.

The product of its digits is 163296, while the sum is 47.

The square root of 19798229 is about 4449.5200864812. The cubic root of 19798229 is about 270.5258567402.

The spelling of 19798229 in words is "nineteen million, seven hundred ninety-eight thousand, two hundred twenty-nine".