1105239997 has 2 divisors, whose sum is σ = 1105239998. Its totient is φ = 1105239996.

The previous prime is 1105239917. The next prime is 1105240001. The reversal of 1105239997 is 7999325011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 688222756 + 417017241 = 26234^2 + 20421^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1105239997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1105239917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 552619998 + 552619999.

It is an arithmetic number, because the mean of its divisors is an integer number (552619999).

Almost surely, 2^1105239997 is an apocalyptic number.

It is an amenable number.

1105239997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1105239997 is an equidigital number, since it uses as much as digits as its factorization.

1105239997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 153090, while the sum is 46.

The square root of 1105239997 is about 33245.1499771019. The cubic root of 1105239997 is about 1033.9166543369.

The spelling of 1105239997 in words is "one billion, one hundred five million, two hundred thirty-nine thousand, nine hundred ninety-seven".