401706859 has 4 divisors (see below), whose sum is σ = 402356440. Its totient is φ = 401057280.

The previous prime is 401706841. The next prime is 401706871. The reversal of 401706859 is 958607104.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 401706859 - 2⁵ = 401706827 is a prime.

It is a super-3 number, since 3×401706859³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401706839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 323862 + ... + 325099.

It is an arithmetic number, because the mean of its divisors is an integer number (100589110).

Almost surely, 2^401706859 is an apocalyptic number.

401706859 is a deficient number, since it is larger than the sum of its proper divisors (649581).

401706859 is an equidigital number, since it uses as much as digits as its factorization.

401706859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649580.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 401706859 is about 20042.6260504955. The cubic root of 401706859 is about 737.8528329527.

The spelling of 401706859 in words is "four hundred one million, seven hundred six thousand, eight hundred fifty-nine".