1012889 has 4 divisors (see below), whose sum is σ = 1015056. Its totient is φ = 1010724.

The previous prime is 1012861. The next prime is 1012903. The reversal of 1012889 is 9882101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1012889 - 2⁸ = 1012633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1012829) 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, 59 + ... + 1424.

It is an arithmetic number, because the mean of its divisors is an integer number (253764).

2^1012889 is an apocalyptic number.

It is an amenable number.

1012889 is a deficient number, since it is larger than the sum of its proper divisors (2167).

1012889 is an equidigital number, since it uses as much as digits as its factorization.

1012889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2166.

The product of its (nonzero) digits is 1152, while the sum is 29.

The square root of 1012889 is about 1006.4238669666. The cubic root of 1012889 is about 100.4278005901.

The spelling of 1012889 in words is "one million, twelve thousand, eight hundred eighty-nine".