1229239 has 6 divisors (see below), whose sum is σ = 1351280. Its totient is φ = 1117380.

The previous prime is 1229237. The next prime is 1229257. The reversal of 1229239 is 9329221.

It is not a de Polignac number, because 1229239 - 2¹ = 1229237 is a prime.

It is a super-2 number, since 2×1229239² = 3022057038242, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1229237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4959 + ... + 5200.

2^1229239 is an apocalyptic number.

1229239 is a deficient number, since it is larger than the sum of its proper divisors (122041).

1229239 is a wasteful number, since it uses less digits than its factorization.

1229239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10181 (or 10170 counting only the distinct ones).

The product of its digits is 1944, while the sum is 28.

The square root of 1229239 is about 1108.7105122619. The cubic root of 1229239 is about 107.1220257490.

The spelling of 1229239 in words is "one million, two hundred twenty-nine thousand, two hundred thirty-nine".