400202216 has 8 divisors (see below), whose sum is σ = 750379170. Its totient is φ = 200101104.

The previous prime is 400202203. The next prime is 400202303. The reversal of 400202216 is 612202004.

It can be written as a sum of positive squares in only one way, i.e., 386908900 + 13293316 = 19670^2 + 3646^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 400202194 and 400202203.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25012631 + ... + 25012646.

Almost surely, 2^400202216 is an apocalyptic number.

It is an amenable number.

400202216 is a deficient number, since it is larger than the sum of its proper divisors (350176954).

400202216 is a wasteful number, since it uses less digits than its factorization.

400202216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50025283 (or 50025279 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 400202216 is about 20005.0547612347. The cubic root of 400202216 is about 736.9304404966.

The spelling of 400202216 in words is "four hundred million, two hundred two thousand, two hundred sixteen".