1100439997 has 2 divisors, whose sum is σ = 1100439998. Its totient is φ = 1100439996.

The previous prime is 1100439919. The next prime is 1100440009. The reversal of 1100439997 is 7999340011.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1098325881 + 2114116 = 33141^2 + 1454^2 .

It is a cyclic number.

It is not a de Polignac number, because 1100439997 - 2¹⁹ = 1099915709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1100439917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550219998 + 550219999.

It is an arithmetic number, because the mean of its divisors is an integer number (550219999).

Almost surely, 2^1100439997 is an apocalyptic number.

It is an amenable number.

1100439997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1100439997 is an equidigital number, since it uses as much as digits as its factorization.

1100439997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 61236, while the sum is 43.

The square root of 1100439997 is about 33172.8804447247. The cubic root of 1100439997 is about 1032.4177335193.

The spelling of 1100439997 in words is "one billion, one hundred million, four hundred thirty-nine thousand, nine hundred ninety-seven".