1249591 has 4 divisors (see below), whose sum is σ = 1428112. Its totient is φ = 1071072.

The previous prime is 1249559. The next prime is 1249603. The reversal of 1249591 is 1959421.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1249591 - 2⁵ = 1249559 is a prime.

It is a super-2 number, since 2×1249591² = 3122955334562, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1249511) 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, 89250 + ... + 89263.

It is an arithmetic number, because the mean of its divisors is an integer number (357028).

2^1249591 is an apocalyptic number.

1249591 is a deficient number, since it is larger than the sum of its proper divisors (178521).

1249591 is an equidigital number, since it uses as much as digits as its factorization.

1249591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178520.

The product of its digits is 3240, while the sum is 31.

The square root of 1249591 is about 1117.8510634248. The cubic root of 1249591 is about 107.7099843694.

The spelling of 1249591 in words is "one million, two hundred forty-nine thousand, five hundred ninety-one".