4000826 has 4 divisors (see below), whose sum is σ = 6001242. Its totient is φ = 2000412.

The previous prime is 4000823. The next prime is 4000853. The reversal of 4000826 is 6280004.

4000826 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2175625 + 1825201 = 1475^2 + 1351^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4000798 and 4000807.

It is not an unprimeable number, because it can be changed into a prime (4000823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000205 + ... + 1000208.

Almost surely, 2^4000826 is an apocalyptic number.

4000826 is a deficient number, since it is larger than the sum of its proper divisors (2000416).

4000826 is a wasteful number, since it uses less digits than its factorization.

4000826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2000415.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 4000826 is about 2000.2064893405. The cubic root of 4000826 is about 158.7510310554.

The spelling of 4000826 in words is "four million, eight hundred twenty-six", and thus it is an aban number.