1139819 has 2 divisors, whose sum is σ = 1139820. Its totient is φ = 1139818.

The previous prime is 1139807. The next prime is 1139843. The reversal of 1139819 is 9189311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1139819 - 2²⁰ = 91243 is a prime.

It is a super-2 number, since 2×1139819² = 2598374705522, which contains 22 as substring.

It is a Chen prime.

It is a plaindrome in base 15.

It is not a weakly prime, because it can be changed into another prime (1139849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 569909 + 569910.

It is an arithmetic number, because the mean of its divisors is an integer number (569910).

2^1139819 is an apocalyptic number.

1139819 is a deficient number, since it is larger than the sum of its proper divisors (1).

1139819 is an equidigital number, since it uses as much as digits as its factorization.

1139819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1944, while the sum is 32.

The square root of 1139819 is about 1067.6230608225. The cubic root of 1139819 is about 104.4588637185.

The spelling of 1139819 in words is "one million, one hundred thirty-nine thousand, eight hundred nineteen".