1366839039 has 4 divisors (see below), whose sum is σ = 1822452056. Its totient is φ = 911226024.

The previous prime is 1366838987. The next prime is 1366839041. The reversal of 1366839039 is 9309386631.

It is a happy number.

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

It is not a de Polignac number, because 1366839039 - 2¹² = 1366834943 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 (1366839059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 227806504 + ... + 227806509.

It is an arithmetic number, because the mean of its divisors is an integer number (455613014).

Almost surely, 2^1366839039 is an apocalyptic number.

1366839039 is a deficient number, since it is larger than the sum of its proper divisors (455613017).

1366839039 is an equidigital number, since it uses as much as digits as its factorization.

1366839039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455613016.

The product of its (nonzero) digits is 629856, while the sum is 48.

The square root of 1366839039 is about 36970.7862913409. The cubic root of 1366839039 is about 1109.7857008583.

The spelling of 1366839039 in words is "one billion, three hundred sixty-six million, eight hundred thirty-nine thousand, thirty-nine".