8400442 has 16 divisors (see below), whose sum is σ = 13105152. Its totient is φ = 4034160.

The previous prime is 8400439. The next prime is 8400461. The reversal of 8400442 is 2440048.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9303 + ... + 10165.

It is an arithmetic number, because the mean of its divisors is an integer number (819072).

Almost surely, 2^8400442 is an apocalyptic number.

8400442 is a deficient number, since it is larger than the sum of its proper divisors (4704710).

8400442 is a wasteful number, since it uses less digits than its factorization.

8400442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1053.

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 8400442 is about 2898.3516004791. The cubic root of 8400442 is about 203.2828367543.

The spelling of 8400442 in words is "eight million, four hundred thousand, four hundred forty-two".