401323864 has 16 divisors (see below), whose sum is σ = 754720200. Its totient is φ = 200065152.

The previous prime is 401323847. The next prime is 401323883. The reversal of 401323864 is 468323104.

It is a super-2 number, since 2×401323864² = 322121687631780992, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71734 + ... + 77125.

Almost surely, 2^401323864 is an apocalyptic number.

It is an amenable number.

401323864 is a deficient number, since it is larger than the sum of its proper divisors (353396336).

401323864 is a wasteful number, since it uses less digits than its factorization.

401323864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149202 (or 149198 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 401323864 is about 20033.0692606001. The cubic root of 401323864 is about 737.6182640565.

Adding to 401323864 its reverse (468323104), we get a palindrome (869646968).

The spelling of 401323864 in words is "four hundred one million, three hundred twenty-three thousand, eight hundred sixty-four".