400668267 has 8 divisors (see below), whose sum is σ = 534482896. Its totient is φ = 266982912.

The previous prime is 400668221. The next prime is 400668269. The reversal of 400668267 is 762866004.

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

It is not a de Polignac number, because 400668267 - 2¹⁴ = 400651883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400668269) 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, 24838 + ... + 37659.

It is an arithmetic number, because the mean of its divisors is an integer number (66810362).

Almost surely, 2^400668267 is an apocalyptic number.

400668267 is a deficient number, since it is larger than the sum of its proper divisors (133814629).

400668267 is a wasteful number, since it uses less digits than its factorization.

400668267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64637.

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 400668267 is about 20016.6997029980. The cubic root of 400668267 is about 737.2163908837.

The spelling of 400668267 in words is "four hundred million, six hundred sixty-eight thousand, two hundred sixty-seven".