1111949 has 2 divisors, whose sum is σ = 1111950. Its totient is φ = 1111948.

The previous prime is 1111933. The next prime is 1111963. The reversal of 1111949 is 9491111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1036324 + 75625 = 1018^2 + 275^2 .

It is a cyclic number.

It is not a de Polignac number, because 1111949 - 2⁴ = 1111933 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 (1111049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555974 + 555975.

It is an arithmetic number, because the mean of its divisors is an integer number (555975).

2^1111949 is an apocalyptic number.

It is an amenable number.

1111949 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111949 is an equidigital number, since it uses as much as digits as its factorization.

1111949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 324, while the sum is 26.

The square root of 1111949 is about 1054.4899240865. The cubic root of 1111949 is about 103.6004454794.

The spelling of 1111949 in words is "one million, one hundred eleven thousand, nine hundred forty-nine".