400003368 has 16 divisors (see below), whose sum is σ = 1000008480. Its totient is φ = 133334448.

The previous prime is 400003367. The next prime is 400003381. The reversal of 400003368 is 863300004.

It is a super-2 number, since 2×400003368² = 320005388822686848, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 16666807 = 400003368 / (4 + 0 + 0 + 0 + 0 + 3 + 3 + 6 + 8).

It is not an unprimeable number, because it can be changed into a prime (400003367) 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, 8333380 + ... + 8333427.

It is an arithmetic number, because the mean of its divisors is an integer number (62500530).

Almost surely, 2^400003368 is an apocalyptic number.

It is an amenable number.

400003368 is an abundant number, since it is smaller than the sum of its proper divisors (600005112).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400003368 is a wasteful number, since it uses less digits than its factorization.

400003368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16666816 (or 16666812 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 400003368 is about 20000.0841998228. The cubic root of 400003368 is about 736.8083676920.

The spelling of 400003368 in words is "four hundred million, three thousand, three hundred sixty-eight".