Search a number
19469 is a prime number
BaseRepresentation
bin100110000001101
3222201002
410300031
51110334
6230045
7110522
oct46015
928632
1019469
111369a
12b325
138b28
147149
155b7e
hex4c0d

19469 has 2 divisors, whose sum is σ = 19470. Its totient is φ = 19468.

The previous prime is 19463. The next prime is 19471. The reversal of 19469 is 96491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15625 + 3844 = 125^2 + 62^2 .

It is a cyclic number.

It is not a de Polignac number, because 19469 - 28 = 19213 is a prime.

It is a super-2 number, since 2×194692 = 758083922, which contains 22 as substring.

Together with 19471, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 11.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9734 + 9735.

It is an arithmetic number, because the mean of its divisors is an integer number (9735).

219469 is an apocalyptic number.

It is an amenable number.

19469 is a deficient number, since it is larger than the sum of its proper divisors (1).

19469 is an equidigital number, since it uses as much as digits as its factorization.

19469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1944, while the sum is 29.

The square root of 19469 is about 139.5313584826. The cubic root of 19469 is about 26.9017922826.

It can be divided in two parts, 19 and 469, that multiplied together give a triangular number (8911 = T133).

The spelling of 19469 in words is "nineteen thousand, four hundred sixty-nine".