401156017 has 4 divisors (see below), whose sum is σ = 402908020. Its totient is φ = 399404016.

The previous prime is 401156011. The next prime is 401156039. The reversal of 401156017 is 710651104.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 390813361 + 10342656 = 19769^2 + 3216^2 .

It is a cyclic number.

It is not a de Polignac number, because 401156017 - 2³ = 401156009 is a prime.

It is a super-2 number, since 2×401156017² = 321852299950608578, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 401155982 and 401156000.

It is not an unprimeable number, because it can be changed into a prime (401156011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 875658 + ... + 876115.

It is an arithmetic number, because the mean of its divisors is an integer number (100727005).

Almost surely, 2^401156017 is an apocalyptic number.

It is an amenable number.

401156017 is a deficient number, since it is larger than the sum of its proper divisors (1752003).

401156017 is a wasteful number, since it uses less digits than its factorization.

401156017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1752002.

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 401156017 is about 20028.8795742548. The cubic root of 401156017 is about 737.5154175461.

The spelling of 401156017 in words is "four hundred one million, one hundred fifty-six thousand, seventeen".