400366770 has 48 divisors (see below), whose sum is σ = 979558272. Its totient is φ = 104728000.

The previous prime is 400366739. The next prime is 400366781. The reversal of 400366770 is 77663004.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 81895 + ... + 86645.

It is an arithmetic number, because the mean of its divisors is an integer number (20407464).

Almost surely, 2^400366770 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 400366770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (489779136).

400366770 is an abundant number, since it is smaller than the sum of its proper divisors (579191502).

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

400366770 is a wasteful number, since it uses less digits than its factorization.

400366770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4867 (or 4814 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 33.

The square root of 400366770 is about 20009.1671490844. The cubic root of 400366770 is about 737.0314296385.

The spelling of 400366770 in words is "four hundred million, three hundred sixty-six thousand, seven hundred seventy".