400522066 has 16 divisors (see below), whose sum is σ = 687085056. Its totient is φ = 171533376.

The previous prime is 400522063. The next prime is 400522117. The reversal of 400522066 is 660225004.

It is a self number, because there is not a number n which added to its sum of digits gives 400522066.

It is not an unprimeable number, because it can be changed into a prime (400522063) 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, 12810 + ... + 31066.

It is an arithmetic number, because the mean of its divisors is an integer number (42942816).

Almost surely, 2^400522066 is an apocalyptic number.

400522066 is a deficient number, since it is larger than the sum of its proper divisors (286562990).

400522066 is a wasteful number, since it uses less digits than its factorization.

400522066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19833.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 400522066 is about 20013.0473941377. The cubic root of 400522066 is about 737.1267116364.

The spelling of 400522066 in words is "four hundred million, five hundred twenty-two thousand, sixty-six".