11989519 has 2 divisors, whose sum is σ = 11989520. Its totient is φ = 11989518.

The previous prime is 11989511. The next prime is 11989531. The reversal of 11989519 is 91598911.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11989519 - 2³ = 11989511 is a prime.

It is a super-2 number, since 2×11989519² = 287497131702722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11989511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5994759 + 5994760.

It is an arithmetic number, because the mean of its divisors is an integer number (5994760).

Almost surely, 2^11989519 is an apocalyptic number.

11989519 is a deficient number, since it is larger than the sum of its proper divisors (1).

11989519 is an equidigital number, since it uses as much as digits as its factorization.

11989519 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29160, while the sum is 43.

The square root of 11989519 is about 3462.5884826239. The cubic root of 11989519 is about 228.8761749291.

The spelling of 11989519 in words is "eleven million, nine hundred eighty-nine thousand, five hundred nineteen".