1264989 has 8 divisors (see below), whose sum is σ = 1840032. Its totient is φ = 766640.

The previous prime is 1264981. The next prime is 1264997. The reversal of 1264989 is 9894621.

It is an interprime number because it is at equal distance from previous prime (1264981) and next prime (1264997).

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 1264989 - 2³ = 1264981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1264981) 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, 19134 + ... + 19199.

It is an arithmetic number, because the mean of its divisors is an integer number (230004).

2^1264989 is an apocalyptic number.

It is an amenable number.

1264989 is a deficient number, since it is larger than the sum of its proper divisors (575043).

1264989 is a wasteful number, since it uses less digits than its factorization.

1264989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38347.

The product of its digits is 31104, while the sum is 39.

The square root of 1264989 is about 1124.7172978131. The cubic root of 1264989 is about 108.1505958092.

It can be divided in two parts, 126 and 4989, that added together give a palindrome (5115).

The spelling of 1264989 in words is "one million, two hundred sixty-four thousand, nine hundred eighty-nine".