400867704 has 80 divisors (see below), whose sum is σ = 1138745520. Its totient is φ = 131725440.

The previous prime is 400867679. The next prime is 400867711. The reversal of 400867704 is 407768004.

It is a happy number.

It is a super-2 number, since 2×400867704² = 321389832220463232, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 41652 + ... + 50364.

It is an arithmetic number, because the mean of its divisors is an integer number (14234319).

Almost surely, 2^400867704 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 400867704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (569372760).

400867704 is an abundant number, since it is smaller than the sum of its proper divisors (737877816).

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

400867704 is a wasteful number, since it uses less digits than its factorization.

400867704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8802 (or 8789 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 400867704 is about 20021.6808485202. The cubic root of 400867704 is about 737.3386897606.

The spelling of 400867704 in words is "four hundred million, eight hundred sixty-seven thousand, seven hundred four".