400412441402 has 4 divisors (see below), whose sum is σ = 600618662106. Its totient is φ = 200206220700.

The previous prime is 400412441381. The next prime is 400412441419. The reversal of 400412441402 is 204144214004.

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., 215917279561 + 184495161841 = 464669^2 + 429529^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100103110349 + ... + 100103110352.

Almost surely, 2^400412441402 is an apocalyptic number.

400412441402 is a deficient number, since it is larger than the sum of its proper divisors (200206220704).

400412441402 is a wasteful number, since it uses less digits than its factorization.

400412441402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200206220703.

The product of its (nonzero) digits is 4096, while the sum is 26.

Adding to 400412441402 its reverse (204144214004), we get a palindrome (604556655406).

The spelling of 400412441402 in words is "four hundred billion, four hundred twelve million, four hundred forty-one thousand, four hundred two".