401987076 has 24 divisors (see below), whose sum is σ = 949845120. Its totient is φ = 132299232.

The previous prime is 401987071. The next prime is 401987081. The reversal of 401987076 is 670789104.

It is an interprime number because it is at equal distance from previous prime (401987071) and next prime (401987081).

It is not an unprimeable number, because it can be changed into a prime (401987071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 211071 + ... + 212966.

It is an arithmetic number, because the mean of its divisors is an integer number (39576880).

Almost surely, 2^401987076 is an apocalyptic number.

It is an amenable number.

401987076 is an abundant number, since it is smaller than the sum of its proper divisors (547858044).

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

401987076 is a wasteful number, since it uses less digits than its factorization.

401987076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424123 (or 424121 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 42.

The square root of 401987076 is about 20049.6153579065. The cubic root of 401987076 is about 738.0243600628.

It can be divided in two parts, 40198 and 7076, that added together give a palindrome (47274).

The spelling of 401987076 in words is "four hundred one million, nine hundred eighty-seven thousand, seventy-six".