40000844 has 12 divisors (see below), whose sum is σ = 75386304. Its totient is φ = 18461904.

The previous prime is 40000837. The next prime is 40000853. The reversal of 40000844 is 44800004.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 384572 + ... + 384675.

It is an arithmetic number, because the mean of its divisors is an integer number (6282192).

Almost surely, 2^40000844 is an apocalyptic number.

It is an amenable number.

40000844 is a deficient number, since it is larger than the sum of its proper divisors (35385460).

40000844 is a wasteful number, since it uses less digits than its factorization.

40000844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769264 (or 769262 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 40000844 is about 6324.6220440434. The cubic root of 40000844 is about 341.9975946846.

Adding to 40000844 its reverse (44800004), we get a palindrome (84800848).

The spelling of 40000844 in words is "forty million, eight hundred forty-four", and thus it is an aban number.