19204969 has 4 divisors (see below), whose sum is σ = 21948544. Its totient is φ = 16461396.

The previous prime is 19204967. The next prime is 19204973. The reversal of 19204969 is 96940291.

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 not a de Polignac number, because 19204969 - 2¹ = 19204967 is a prime.

It is a super-2 number, since 2×19204969² = 737661668581922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19204967) 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 3 ways as a sum of consecutive naturals, for example, 1371777 + ... + 1371790.

It is an arithmetic number, because the mean of its divisors is an integer number (5487136).

Almost surely, 2^19204969 is an apocalyptic number.

It is an amenable number.

19204969 is a deficient number, since it is larger than the sum of its proper divisors (2743575).

19204969 is an equidigital number, since it uses as much as digits as its factorization.

19204969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2743574.

The product of its (nonzero) digits is 34992, while the sum is 40.

The square root of 19204969 is about 4382.3474303163. The cubic root of 19204969 is about 267.7962781260.

It can be divided in two parts, 1920 and 4969, that added together give a square (6889 = 83²).

The spelling of 19204969 in words is "nineteen million, two hundred four thousand, nine hundred sixty-nine".