400328966 has 4 divisors (see below), whose sum is σ = 600493452. Its totient is φ = 200164482.

The previous prime is 400328959. The next prime is 400328969. The reversal of 400328966 is 669823004.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400328969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100082240 + ... + 100082243.

It is an arithmetic number, because the mean of its divisors is an integer number (150123363).

Almost surely, 2^400328966 is an apocalyptic number.

400328966 is a deficient number, since it is larger than the sum of its proper divisors (200164486).

400328966 is a wasteful number, since it uses less digits than its factorization.

400328966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200164485.

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 400328966 is about 20008.2224597789. Note that the first 3 decimals coincide. The cubic root of 400328966 is about 737.0082312320.

The spelling of 400328966 in words is "four hundred million, three hundred twenty-eight thousand, nine hundred sixty-six".