1249864 has 32 divisors (see below), whose sum is σ = 2923200. Its totient is φ = 486720.

The previous prime is 1249861. The next prime is 1249873. The reversal of 1249864 is 4689421.

It is not an unprimeable number, because it can be changed into a prime (1249861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 399 + ... + 1630.

It is an arithmetic number, because the mean of its divisors is an integer number (91350).

2^1249864 is an apocalyptic number.

1249864 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1249864 is an abundant number, since it is smaller than the sum of its proper divisors (1673336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1249864 is a wasteful number, since it uses less digits than its factorization.

1249864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2053 (or 2049 counting only the distinct ones).

The product of its digits is 13824, while the sum is 34.

The square root of 1249864 is about 1117.9731660465. The cubic root of 1249864 is about 107.7178276517.

The spelling of 1249864 in words is "one million, two hundred forty-nine thousand, eight hundred sixty-four".