12400803 has 16 divisors (see below), whose sum is σ = 19452960. Its totient is φ = 7780608.

The previous prime is 12400793. The next prime is 12400847. The reversal of 12400803 is 30800421.

It is a happy number.

It is not a de Polignac number, because 12400803 - 2⁸ = 12400547 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12400303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13050 + ... + 13967.

It is an arithmetic number, because the mean of its divisors is an integer number (1215810).

Almost surely, 2^12400803 is an apocalyptic number.

12400803 is a deficient number, since it is larger than the sum of its proper divisors (7052157).

12400803 is a wasteful number, since it uses less digits than its factorization.

12400803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27043 (or 27037 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 12400803 is about 3521.4773888242. The cubic root of 12400803 is about 231.4639016217.

It can be divided in two parts, 12400 and 803, that added together give a triangular number (13203 = T₁₆₂).

The spelling of 12400803 in words is "twelve million, four hundred thousand, eight hundred three".