1456989 has 8 divisors (see below), whose sum is σ = 2009760. Its totient is φ = 937776.

The previous prime is 1456963. The next prime is 1457011. The reversal of 1456989 is 9896541.

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

It is not a de Polignac number, because 1456989 - 2¹¹ = 1454941 is a prime.

It is a super-2 number, since 2×1456989² = 4245633892242, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1456989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1456919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8287 + ... + 8460.

It is an arithmetic number, because the mean of its divisors is an integer number (251220).

2^1456989 is an apocalyptic number.

It is an amenable number.

1456989 is a deficient number, since it is larger than the sum of its proper divisors (552771).

1456989 is a wasteful number, since it uses less digits than its factorization.

1456989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16779.

The product of its digits is 77760, while the sum is 42.

The square root of 1456989 is about 1207.0579936358. The cubic root of 1456989 is about 113.3666789614.

The spelling of 1456989 in words is "one million, four hundred fifty-six thousand, nine hundred eighty-nine".