1399293440191 has 4 divisors (see below), whose sum is σ = 1399295930400. Its totient is φ = 1399290949984.

The previous prime is 1399293440183. The next prime is 1399293440257. The reversal of 1399293440191 is 1910443929931.

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 1399293440191 - 2³ = 1399293440183 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 (1399293440891) 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, 39690 + ... + 1673368.

It is an arithmetic number, because the mean of its divisors is an integer number (349823982600).

Almost surely, 2^{1399293440191} is an apocalyptic number.

1399293440191 is a deficient number, since it is larger than the sum of its proper divisors (2490209).

1399293440191 is an equidigital number, since it uses as much as digits as its factorization.

1399293440191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2490208.

The product of its (nonzero) digits is 1889568, while the sum is 55.

The spelling of 1399293440191 in words is "one trillion, three hundred ninety-nine billion, two hundred ninety-three million, four hundred forty thousand, one hundred ninety-one".