401368851 has 20 divisors (see below), whose sum is σ = 645698592. Its totient is φ = 246995568.

The previous prime is 401368843. The next prime is 401368853. The reversal of 401368851 is 158863104.

It is not a de Polignac number, because 401368851 - 2³ = 401368843 is a prime.

It is a super-2 number, since 2×401368851² = 322193909106120402, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401368853) 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 19 ways as a sum of consecutive naturals, for example, 189531 + ... + 191636.

Almost surely, 2^401368851 is an apocalyptic number.

401368851 is a deficient number, since it is larger than the sum of its proper divisors (244329741).

401368851 is a wasteful number, since it uses less digits than its factorization.

401368851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381192 (or 381183 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 401368851 is about 20034.1920475970. The cubic root of 401368851 is about 737.6458245017.

The spelling of 401368851 in words is "four hundred one million, three hundred sixty-eight thousand, eight hundred fifty-one".