401440366 has 8 divisors (see below), whose sum is σ = 612366840. Its totient is φ = 197318088.

The previous prime is 401440339. The next prime is 401440387. The reversal of 401440366 is 663044104.

It is a happy number.

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

It is a super-2 number, since 2×401440366² = 322308734908427912, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1700901 + ... + 1701136.

It is an arithmetic number, because the mean of its divisors is an integer number (76545855).

Almost surely, 2^401440366 is an apocalyptic number.

401440366 is a deficient number, since it is larger than the sum of its proper divisors (210926474).

401440366 is a wasteful number, since it uses less digits than its factorization.

401440366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3402098.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 401440366 is about 20035.9767917614. The cubic root of 401440366 is about 737.6896325917.

The spelling of 401440366 in words is "four hundred one million, four hundred forty thousand, three hundred sixty-six".