400011022 has 4 divisors (see below), whose sum is σ = 600016536. Its totient is φ = 200005510.

The previous prime is 400010993. The next prime is 400011041. The reversal of 400011022 is 220110004.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100002754 + ... + 100002757.

It is an arithmetic number, because the mean of its divisors is an integer number (150004134).

Almost surely, 2^400011022 is an apocalyptic number.

400011022 is a deficient number, since it is larger than the sum of its proper divisors (200005514).

400011022 is a wasteful number, since it uses less digits than its factorization.

400011022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200005513.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 400011022 is about 20000.2755481018. The cubic root of 400011022 is about 736.8130672318.

Adding to 400011022 its reverse (220110004), we get a palindrome (620121026).

The spelling of 400011022 in words is "four hundred million, eleven thousand, twenty-two".