400444486 has 24 divisors (see below), whose sum is σ = 688696344. Its totient is φ = 173946240.

The previous prime is 400444481. The next prime is 400444487. The reversal of 400444486 is 684444004.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400444481) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29100 + ... + 40591.

It is an arithmetic number, because the mean of its divisors is an integer number (28695681).

Almost surely, 2^400444486 is an apocalyptic number.

400444486 is a deficient number, since it is larger than the sum of its proper divisors (288251858).

400444486 is a wasteful number, since it uses less digits than its factorization.

400444486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69736 (or 69723 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 34.

The square root of 400444486 is about 20011.1090647170. The cubic root of 400444486 is about 737.0791154382.

The spelling of 400444486 in words is "four hundred million, four hundred forty-four thousand, four hundred eighty-six".