1249889 has 8 divisors (see below), whose sum is σ = 1347072. Its totient is φ = 1156320.

The previous prime is 1249873. The next prime is 1249901. The reversal of 1249889 is 9889421.

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 1249889 - 2⁴ = 1249873 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1249819) 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, 164 + ... + 1589.

It is an arithmetic number, because the mean of its divisors is an integer number (168384).

2^1249889 is an apocalyptic number.

It is an amenable number.

1249889 is a deficient number, since it is larger than the sum of its proper divisors (97183).

1249889 is a wasteful number, since it uses less digits than its factorization.

1249889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1807.

The product of its digits is 41472, while the sum is 41.

The square root of 1249889 is about 1117.9843469387. The cubic root of 1249889 is about 107.7185458439.

The spelling of 1249889 in words is "one million, two hundred forty-nine thousand, eight hundred eighty-nine".