10400789 has 8 divisors (see below), whose sum is σ = 12129600. Its totient is φ = 8914668.

The previous prime is 10400783. The next prime is 10400801. The reversal of 10400789 is 98700401.

10400789 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-10400789 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10400783) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14819 + ... + 15504.

It is an arithmetic number, because the mean of its divisors is an integer number (1516200).

Almost surely, 2^10400789 is an apocalyptic number.

It is an amenable number.

10400789 is a deficient number, since it is larger than the sum of its proper divisors (1728811).

10400789 is an frugal number, since it uses more digits than its factorization.

10400789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30344 (or 30330 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 10400789 is about 3225.0254262564. The cubic root of 10400789 is about 218.2840964020.

The spelling of 10400789 in words is "ten million, four hundred thousand, seven hundred eighty-nine".