1161929 has 2 divisors, whose sum is σ = 1161930. Its totient is φ = 1161928.

The previous prime is 1161893. The next prime is 1161931. The reversal of 1161929 is 9291611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1106704 + 55225 = 1052^2 + 235^2 .

It is a cyclic number.

It is not a de Polignac number, because 1161929 - 2¹² = 1157833 is a prime.

Together with 1161931, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1161949) 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, 580964 + 580965.

It is an arithmetic number, because the mean of its divisors is an integer number (580965).

2^1161929 is an apocalyptic number.

It is an amenable number.

1161929 is a deficient number, since it is larger than the sum of its proper divisors (1).

1161929 is an equidigital number, since it uses as much as digits as its factorization.

1161929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 972, while the sum is 29.

The square root of 1161929 is about 1077.9281052092. The cubic root of 1161929 is about 105.1299675574.

The spelling of 1161929 in words is "one million, one hundred sixty-one thousand, nine hundred twenty-nine".