10400123399 has 8 divisors (see below), whose sum is σ = 10550963808. Its totient is φ = 10250173440.

The previous prime is 10400123359. The next prime is 10400123413. The reversal of 10400123399 is 99332100401.

10400123399 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-10400123399 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 (10400123359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199067 + ... + 245820.

It is an arithmetic number, because the mean of its divisors is an integer number (1318870476).

Almost surely, 2^10400123399 is an apocalyptic number.

10400123399 is a deficient number, since it is larger than the sum of its proper divisors (150840409).

10400123399 is an equidigital number, since it uses as much as digits as its factorization.

10400123399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445225.

The product of its (nonzero) digits is 5832, while the sum is 32.

The spelling of 10400123399 in words is "ten billion, four hundred million, one hundred twenty-three thousand, three hundred ninety-nine".