401740866 has 48 divisors (see below), whose sum is σ = 891581184. Its totient is φ = 130678272.

The previous prime is 401740849. The next prime is 401740879. The reversal of 401740866 is 668047104.

It is a super-2 number, since 2×401740866² = 322791446828859912, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 401740866.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 487731 + ... + 488553.

It is an arithmetic number, because the mean of its divisors is an integer number (18574608).

Almost surely, 2^401740866 is an apocalyptic number.

401740866 is an abundant number, since it is smaller than the sum of its proper divisors (489840318).

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

401740866 is a wasteful number, since it uses less digits than its factorization.

401740866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1455 (or 1452 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 401740866 is about 20043.4743994149. The cubic root of 401740866 is about 737.8736536521.

The spelling of 401740866 in words is "four hundred one million, seven hundred forty thousand, eight hundred sixty-six".