400866852 has 24 divisors (see below), whose sum is σ = 948532032. Its totient is φ = 131740000.

The previous prime is 400866841. The next prime is 400866853. The reversal of 400866852 is 258668004.

It is a self number, because there is not a number n which added to its sum of digits gives 400866852.

It is not an unprimeable number, because it can be changed into a prime (400866853) 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, 234399 + ... + 236102.

It is an arithmetic number, because the mean of its divisors is an integer number (39522168).

Almost surely, 2^400866852 is an apocalyptic number.

It is an amenable number.

400866852 is an abundant number, since it is smaller than the sum of its proper divisors (547665180).

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

400866852 is a wasteful number, since it uses less digits than its factorization.

400866852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470579 (or 470577 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 39.

The square root of 400866852 is about 20021.6595715740. The cubic root of 400866852 is about 737.3381673829.

The spelling of 400866852 in words is "four hundred million, eight hundred sixty-six thousand, eight hundred fifty-two".