1199400017 has 4 divisors (see below), whose sum is σ = 1222030260. Its totient is φ = 1176769776.

The previous prime is 1199400011. The next prime is 1199400043. The reversal of 1199400017 is 7100049911.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1089066001 + 110334016 = 33001^2 + 10504^2 .

It is a cyclic number.

It is not a de Polignac number, because 1199400017 - 2⁶ = 1199399953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1199400011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11315042 + ... + 11315147.

It is an arithmetic number, because the mean of its divisors is an integer number (305507565).

Almost surely, 2^1199400017 is an apocalyptic number.

It is an amenable number.

1199400017 is a deficient number, since it is larger than the sum of its proper divisors (22630243).

1199400017 is an equidigital number, since it uses as much as digits as its factorization.

1199400017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22630242.

The product of its (nonzero) digits is 2268, while the sum is 32.

The square root of 1199400017 is about 34632.3550599725. The cubic root of 1199400017 is about 1062.4814349144.

Adding to 1199400017 its reverse (7100049911), we get a palindrome (8299449928).

The spelling of 1199400017 in words is "one billion, one hundred ninety-nine million, four hundred thousand, seventeen".