400443667 has 8 divisors (see below), whose sum is σ = 431452224. Its totient is φ = 369464448.

The previous prime is 400443661. The next prime is 400443683. The reversal of 400443667 is 766344004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 400443667 - 2⁷ = 400443539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400443661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27003 + ... + 39115.

It is an arithmetic number, because the mean of its divisors is an integer number (53931528).

Almost surely, 2^400443667 is an apocalyptic number.

400443667 is a deficient number, since it is larger than the sum of its proper divisors (31008557).

400443667 is a wasteful number, since it uses less digits than its factorization.

400443667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14669.

The product of its (nonzero) digits is 48384, while the sum is 34.

The square root of 400443667 is about 20011.0886010732. The cubic root of 400443667 is about 737.0786129397.

The spelling of 400443667 in words is "four hundred million, four hundred forty-three thousand, six hundred sixty-seven".