1396416866399 has 4 divisors (see below), whose sum is σ = 1396435696536. Its totient is φ = 1396398036264.

The previous prime is 1396416866371. The next prime is 1396416866443. The reversal of 1396416866399 is 9936686146931.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1396416866399 - 2³⁶ = 1327697389663 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 (1396416866309) 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, 9303389 + ... + 9452294.

It is an arithmetic number, because the mean of its divisors is an integer number (349108924134).

Almost surely, 2^{1396416866399} is an apocalyptic number.

1396416866399 is a deficient number, since it is larger than the sum of its proper divisors (18830137).

1396416866399 is an equidigital number, since it uses as much as digits as its factorization.

1396416866399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18830136.

The product of its digits is 272097792, while the sum is 71.

The spelling of 1396416866399 in words is "one trillion, three hundred ninety-six billion, four hundred sixteen million, eight hundred sixty-six thousand, three hundred ninety-nine".