400081244 has 12 divisors (see below), whose sum is σ = 700299768. Its totient is φ = 199995600.

The previous prime is 400081229. The next prime is 400081267. The reversal of 400081244 is 442180004.

It is a congruent number.

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, 16154 + ... + 32574.

It is an arithmetic number, because the mean of its divisors is an integer number (58358314).

Almost surely, 2^400081244 is an apocalyptic number.

It is an amenable number.

400081244 is a deficient number, since it is larger than the sum of its proper divisors (300218524).

400081244 is a wasteful number, since it uses less digits than its factorization.

400081244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22516 (or 22514 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

The square root of 400081244 is about 20002.0309968763. The cubic root of 400081244 is about 736.8561805936.

The spelling of 400081244 in words is "four hundred million, eighty-one thousand, two hundred forty-four".