400454222450 has 48 divisors (see below), whose sum is σ = 780565683456. Its totient is φ = 152559580800.

The previous prime is 400454222447. The next prime is 400454222479. The reversal of 400454222450 is 54222454004.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 479306 + ... + 1015205.

It is an arithmetic number, because the mean of its divisors is an integer number (16261785072).

Almost surely, 2^400454222450 is an apocalyptic number.

400454222450 is a deficient number, since it is larger than the sum of its proper divisors (380111461006).

400454222450 is a wasteful number, since it uses less digits than its factorization.

400454222450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1494779 (or 1494774 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 32.

Adding to 400454222450 its reverse (54222454004), we get a palindrome (454676676454).

The spelling of 400454222450 in words is "four hundred billion, four hundred fifty-four million, two hundred twenty-two thousand, four hundred fifty".