400087244 has 12 divisors (see below), whose sum is σ = 704346384. Its totient is φ = 198845424.

The previous prime is 400087243. The next prime is 400087279. The reversal of 400087244 is 442780004.

It is not an unprimeable number, because it can be changed into a prime (400087241) 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, 298799 + ... + 300134.

It is an arithmetic number, because the mean of its divisors is an integer number (58695532).

Almost surely, 2^400087244 is an apocalyptic number.

It is an amenable number.

400087244 is a deficient number, since it is larger than the sum of its proper divisors (304259140).

400087244 is a wasteful number, since it uses less digits than its factorization.

400087244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 599104 (or 599102 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 29.

The square root of 400087244 is about 20002.1809810830. The cubic root of 400087244 is about 736.8598641080.

The spelling of 400087244 in words is "four hundred million, eighty-seven thousand, two hundred forty-four".