400402322 has 4 divisors (see below), whose sum is σ = 600603486. Its totient is φ = 200201160.

The previous prime is 400402319. The next prime is 400402337. The reversal of 400402322 is 223204004.

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

It can be written as a sum of positive squares in only one way, i.e., 391287961 + 9114361 = 19781^2 + 3019^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 400402322.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100100579 + ... + 100100582.

Almost surely, 2^400402322 is an apocalyptic number.

400402322 is a deficient number, since it is larger than the sum of its proper divisors (200201164).

400402322 is a wasteful number, since it uses less digits than its factorization.

400402322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200201163.

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 400402322 is about 20010.0555221619. The cubic root of 400402322 is about 737.0532447738.

Adding to 400402322 its reverse (223204004), we get a palindrome (623606326).

The spelling of 400402322 in words is "four hundred million, four hundred two thousand, three hundred twenty-two".