11400399999 has 20 divisors (see below), whose sum is σ = 17263526896. Its totient is φ = 7496149536.

The previous prime is 11400399953. The next prime is 11400400013. The reversal of 11400399999 is 99999300411.

It is not a de Polignac number, because 11400399999 - 2⁹ = 11400399487 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 (11400399299) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 958099 + ... + 969924.

Almost surely, 2^11400399999 is an apocalyptic number.

11400399999 is a deficient number, since it is larger than the sum of its proper divisors (5863126897).

11400399999 is an equidigital number, since it uses as much as digits as its factorization.

11400399999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1928108 (or 1928099 counting only the distinct ones).

The product of its (nonzero) digits is 708588, while the sum is 54.

The spelling of 11400399999 in words is "eleven billion, four hundred million, three hundred ninety-nine thousand, nine hundred ninety-nine".