401218344 has 24 divisors (see below), whose sum is σ = 1086633210. Its totient is φ = 133739424.

The previous prime is 401218339. The next prime is 401218351. The reversal of 401218344 is 443812104.

401218344 is a `hidden beast` number, since 401 + 218 + 3 + 44 = 666.

It can be written as a sum of positive squares in only one way, i.e., 340845444 + 60372900 = 18462^2 + 7770^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2786167 + ... + 2786310.

Almost surely, 2^401218344 is an apocalyptic number.

It is an amenable number.

401218344 is an abundant number, since it is smaller than the sum of its proper divisors (685414866).

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

401218344 is a wasteful number, since it uses less digits than its factorization.

401218344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5572489 (or 5572482 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 401218344 is about 20030.4354420966. The cubic root of 401218344 is about 737.5536111176.

The spelling of 401218344 in words is "four hundred one million, two hundred eighteen thousand, three hundred forty-four".