1156849 has 2 divisors, whose sum is σ = 1156850. Its totient is φ = 1156848.

The previous prime is 1156847. The next prime is 1156873. The reversal of 1156849 is 9486511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 970225 + 186624 = 985^2 + 432^2 .

It is a cyclic number.

It is not a de Polignac number, because 1156849 - 2¹ = 1156847 is a prime.

Together with 1156847, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1156847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 578424 + 578425.

It is an arithmetic number, because the mean of its divisors is an integer number (578425).

2^1156849 is an apocalyptic number.

It is an amenable number.

1156849 is a deficient number, since it is larger than the sum of its proper divisors (1).

1156849 is an equidigital number, since it uses as much as digits as its factorization.

1156849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 34.

The square root of 1156849 is about 1075.5691516588. The cubic root of 1156849 is about 104.9765329264.

The spelling of 1156849 in words is "one million, one hundred fifty-six thousand, eight hundred forty-nine".