1229389 has 8 divisors (see below), whose sum is σ = 1487808. Its totient is φ = 991680.

The previous prime is 1229381. The next prime is 1229401. The reversal of 1229389 is 9839221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1229389 - 2³ = 1229381 is a prime.

It is a super-2 number, since 2×1229389² = 3022794626642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1229381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5047 + ... + 5284.

It is an arithmetic number, because the mean of its divisors is an integer number (185976).

2^1229389 is an apocalyptic number.

It is an amenable number.

1229389 is a deficient number, since it is larger than the sum of its proper divisors (258419).

1229389 is a wasteful number, since it uses less digits than its factorization.

1229389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10355.

The product of its digits is 7776, while the sum is 34.

The square root of 1229389 is about 1108.7781563505. The cubic root of 1229389 is about 107.1263828215.

The spelling of 1229389 in words is "one million, two hundred twenty-nine thousand, three hundred eighty-nine".