1399047813245 has 4 divisors (see below), whose sum is σ = 1678857375900. Its totient is φ = 1119238250592.

The previous prime is 1399047813197. The next prime is 1399047813253. The reversal of 1399047813245 is 5423187409931.

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 689386465849 + 709661347396 = 830293^2 + 842414^2 .

It is a cyclic number.

It is not a de Polignac number, because 1399047813245 - 2⁶ = 1399047813181 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139904781320 + ... + 139904781329.

It is an arithmetic number, because the mean of its divisors is an integer number (419714343975).

Almost surely, 2^{1399047813245} is an apocalyptic number.

It is an amenable number.

1399047813245 is a deficient number, since it is larger than the sum of its proper divisors (279809562655).

1399047813245 is an equidigital number, since it uses as much as digits as its factorization.

1399047813245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279809562654.

The product of its (nonzero) digits is 6531840, while the sum is 56.

The spelling of 1399047813245 in words is "one trillion, three hundred ninety-nine billion, forty-seven million, eight hundred thirteen thousand, two hundred forty-five".