19413969 has 4 divisors (see below), whose sum is σ = 25885296. Its totient is φ = 12942644.

The previous prime is 19413931. The next prime is 19413971. The reversal of 19413969 is 96931491.

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 19413969 - 2⁷ = 19413841 is a prime.

It is a super-2 number, since 2×19413969² = 753804384665922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 19413969.

It is not an unprimeable number, because it can be changed into a prime (19433969) 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, 3235659 + ... + 3235664.

It is an arithmetic number, because the mean of its divisors is an integer number (6471324).

Almost surely, 2^19413969 is an apocalyptic number.

It is an amenable number.

19413969 is a deficient number, since it is larger than the sum of its proper divisors (6471327).

19413969 is an equidigital number, since it uses as much as digits as its factorization.

19413969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6471326.

The product of its digits is 52488, while the sum is 42.

The square root of 19413969 is about 4406.1285727949. The cubic root of 19413969 is about 268.7642152928.

The spelling of 19413969 in words is "nineteen million, four hundred thirteen thousand, nine hundred sixty-nine".