11400393788 has 12 divisors (see below), whose sum is σ = 22800787632. Its totient is φ = 4885883040.

The previous prime is 11400393779. The next prime is 11400393799. The reversal of 11400393788 is 88739300411.

11400393788 is an admirable number.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

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, 203578433 + ... + 203578488.

It is an arithmetic number, because the mean of its divisors is an integer number (1900065636).

Almost surely, 2^11400393788 is an apocalyptic number.

It is an amenable number.

11400393788 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11400393788 is a wasteful number, since it uses less digits than its factorization.

11400393788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407156932 (or 407156930 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 44.

The spelling of 11400393788 in words is "eleven billion, four hundred million, three hundred ninety-three thousand, seven hundred eighty-eight".