19379969 has 4 divisors (see below), whose sum is σ = 22148544. Its totient is φ = 16611396.

The previous prime is 19379963. The next prime is 19379977. The reversal of 19379969 is 96997391.

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 19379969 - 2⁴ = 19379953 is a prime.

It is a super-2 number, since 2×19379969² = 751166396881922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19379969.

It is not an unprimeable number, because it can be changed into a prime (19379963) 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, 1384277 + ... + 1384290.

It is an arithmetic number, because the mean of its divisors is an integer number (5537136).

Almost surely, 2^19379969 is an apocalyptic number.

It is an amenable number.

19379969 is a deficient number, since it is larger than the sum of its proper divisors (2768575).

19379969 is an equidigital number, since it uses as much as digits as its factorization.

19379969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2768574.

The product of its digits is 826686, while the sum is 53.

The square root of 19379969 is about 4402.2686197005. The cubic root of 19379969 is about 268.6072265627.

The spelling of 19379969 in words is "nineteen million, three hundred seventy-nine thousand, nine hundred sixty-nine".