10400007 has 4 divisors (see below), whose sum is σ = 13866680. Its totient is φ = 6933336.

The previous prime is 10399993. The next prime is 10400021. The reversal of 10400007 is 70000401.

10400007 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70000401 = 3 ⋅23333467.

It is an interprime number because it is at equal distance from previous prime (10399993) and next prime (10400021).

It is not a de Polignac number, because 10400007 - 2⁸ = 10399751 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10399965 and 10400001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10400057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1733332 + ... + 1733337.

It is an arithmetic number, because the mean of its divisors is an integer number (3466670).

Almost surely, 2^10400007 is an apocalyptic number.

10400007 is a deficient number, since it is larger than the sum of its proper divisors (3466673).

10400007 is an equidigital number, since it uses as much as digits as its factorization.

10400007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3466672.

The product of its (nonzero) digits is 28, while the sum is 12.

The square root of 10400007 is about 3224.9041846232. The cubic root of 10400007 is about 218.2786255850.

Adding to 10400007 its reverse (70000401), we get a palindrome (80400408).

The spelling of 10400007 in words is "ten million, four hundred thousand, seven".