1370309999 has 4 divisors (see below), whose sum is σ = 1370387136. Its totient is φ = 1370232864.

The previous prime is 1370309989. The next prime is 1370310013. The reversal of 1370309999 is 9999030731.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1370309999 - 2²⁰ = 1369261423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1370309989) 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 in 3 ways as a sum of consecutive naturals, for example, 3047 + ... + 52439.

It is an arithmetic number, because the mean of its divisors is an integer number (342596784).

Almost surely, 2^1370309999 is an apocalyptic number.

1370309999 is a deficient number, since it is larger than the sum of its proper divisors (77137).

1370309999 is an equidigital number, since it uses as much as digits as its factorization.

1370309999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77136.

The product of its (nonzero) digits is 413343, while the sum is 50.

The square root of 1370309999 is about 37017.6984562790. The cubic root of 1370309999 is about 1110.7243058299.

The spelling of 1370309999 in words is "one billion, three hundred seventy million, three hundred nine thousand, nine hundred ninety-nine".