1156949 has 2 divisors, whose sum is σ = 1156950. Its totient is φ = 1156948.

The previous prime is 1156927. The next prime is 1156963. The reversal of 1156949 is 9496511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 734449 + 422500 = 857^2 + 650^2 .

It is a cyclic number.

It is not a de Polignac number, because 1156949 - 2¹⁶ = 1091413 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1156249) 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, 578474 + 578475.

It is an arithmetic number, because the mean of its divisors is an integer number (578475).

2^1156949 is an apocalyptic number.

It is an amenable number.

1156949 is a deficient number, since it is larger than the sum of its proper divisors (1).

1156949 is an equidigital number, since it uses as much as digits as its factorization.

1156949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9720, while the sum is 35.

The square root of 1156949 is about 1075.6156376699. The cubic root of 1156949 is about 104.9795576228.

The spelling of 1156949 in words is "one million, one hundred fifty-six thousand, nine hundred forty-nine".