1229987 has 8 divisors (see below), whose sum is σ = 1385472. Its totient is φ = 1081800.

The previous prime is 1229981. The next prime is 1229993. The reversal of 1229987 is 7899221.

It is an interprime number because it is at equal distance from previous prime (1229981) and next prime (1229993).

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 1229987 - 2⁸ = 1229731 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1229987.

It is not an unprimeable number, because it can be changed into a prime (1229981) 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, 1463 + ... + 2144.

It is an arithmetic number, because the mean of its divisors is an integer number (173184).

2^1229987 is an apocalyptic number.

1229987 is a deficient number, since it is larger than the sum of its proper divisors (155485).

1229987 is a wasteful number, since it uses less digits than its factorization.

1229987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3649.

The product of its digits is 18144, while the sum is 38.

The square root of 1229987 is about 1109.0477897728. The cubic root of 1229987 is about 107.1437494952.

The spelling of 1229987 in words is "one million, two hundred twenty-nine thousand, nine hundred eighty-seven".