400313446 has 16 divisors (see below), whose sum is σ = 647350704. Its totient is φ = 184562784.

The previous prime is 400313437. The next prime is 400313449. The reversal of 400313446 is 644313004.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 400313446.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400313449) 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, 18201 + ... + 33643.

It is an arithmetic number, because the mean of its divisors is an integer number (40459419).

Almost surely, 2^400313446 is an apocalyptic number.

400313446 is a deficient number, since it is larger than the sum of its proper divisors (247037258).

400313446 is a wasteful number, since it uses less digits than its factorization.

400313446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16455.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 400313446 is about 20007.8346154700. The cubic root of 400313446 is about 736.9987069686.

The spelling of 400313446 in words is "four hundred million, three hundred thirteen thousand, four hundred forty-six".