401939876 has 12 divisors (see below), whose sum is σ = 757502172. Its totient is φ = 185510688.

The previous prime is 401939873. The next prime is 401939897. The reversal of 401939876 is 678939104.

It can be written as a sum of positive squares in 2 ways, for example, as 93586276 + 308353600 = 9674^2 + 17560^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 401939876.

It is not an unprimeable number, because it can be changed into a prime (401939873) 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, 3864755 + ... + 3864858.

It is an arithmetic number, because the mean of its divisors is an integer number (63125181).

Almost surely, 2^401939876 is an apocalyptic number.

It is an amenable number.

401939876 is a deficient number, since it is larger than the sum of its proper divisors (355562296).

401939876 is a wasteful number, since it uses less digits than its factorization.

401939876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7729630 (or 7729628 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 401939876 is about 20048.4382434144. The cubic root of 401939876 is about 737.9954734681.

The spelling of 401939876 in words is "four hundred one million, nine hundred thirty-nine thousand, eight hundred seventy-six".