400838901322 has 4 divisors (see below), whose sum is σ = 601258351986. Its totient is φ = 200419450660.

The previous prime is 400838901241. The next prime is 400838901341. The reversal of 400838901322 is 223109838004.

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., 353702583441 + 47136317881 = 594729^2 + 217109^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100209725329 + ... + 100209725332.

Almost surely, 2^400838901322 is an apocalyptic number.

400838901322 is a deficient number, since it is larger than the sum of its proper divisors (200419450664).

400838901322 is a wasteful number, since it uses less digits than its factorization.

400838901322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200419450663.

The product of its (nonzero) digits is 82944, while the sum is 40.

The spelling of 400838901322 in words is "four hundred billion, eight hundred thirty-eight million, nine hundred one thousand, three hundred twenty-two".