401814684 has 36 divisors (see below), whose sum is σ = 1048465600. Its totient is φ = 129617280.

The previous prime is 401814683. The next prime is 401814697. The reversal of 401814684 is 486418104.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×401814684² = 322910080556039712, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401814683) 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 11 ways as a sum of consecutive naturals, for example, 178909 + ... + 181140.

Almost surely, 2^401814684 is an apocalyptic number.

It is an amenable number.

401814684 is an abundant number, since it is smaller than the sum of its proper divisors (646650916).

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

401814684 is a wasteful number, since it uses less digits than its factorization.

401814684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360090 (or 360085 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The square root of 401814684 is about 20045.3157620428. The cubic root of 401814684 is about 737.9188444921.

The spelling of 401814684 in words is "four hundred one million, eight hundred fourteen thousand, six hundred eighty-four".