1229387 has 4 divisors (see below), whose sum is σ = 1231776. Its totient is φ = 1227000.

The previous prime is 1229381. The next prime is 1229401. The reversal of 1229387 is 7839221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1229387 - 2⁸ = 1229131 is a prime.

It is a super-2 number, since 2×1229387² = 3022784791538, which contains 22 as substring.

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 68 + ... + 1569.

It is an arithmetic number, because the mean of its divisors is an integer number (307944).

2^1229387 is an apocalyptic number.

1229387 is a deficient number, since it is larger than the sum of its proper divisors (2389).

1229387 is an equidigital number, since it uses as much as digits as its factorization.

1229387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2388.

The product of its digits is 6048, while the sum is 32.

The square root of 1229387 is about 1108.7772544565. Note that the first 3 decimals coincide. The cubic root of 1229387 is about 107.1263247296.

The spelling of 1229387 in words is "one million, two hundred twenty-nine thousand, three hundred eighty-seven".