1989267 has 8 divisors (see below), whose sum is σ = 3031296. Its totient is φ = 1136712.

The previous prime is 1989263. The next prime is 1989277. The reversal of 1989267 is 7629891.

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

It is not a de Polignac number, because 1989267 - 2² = 1989263 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1989263) 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, 47343 + ... + 47384.

It is an arithmetic number, because the mean of its divisors is an integer number (378912).

2^1989267 is an apocalyptic number.

1989267 is a deficient number, since it is larger than the sum of its proper divisors (1042029).

1989267 is an equidigital number, since it uses as much as digits as its factorization.

1989267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94737.

The product of its digits is 54432, while the sum is 42.

The square root of 1989267 is about 1410.4137690763. The cubic root of 1989267 is about 125.7663217408.

The spelling of 1989267 in words is "one million, nine hundred eighty-nine thousand, two hundred sixty-seven".