400022605 has 8 divisors (see below), whose sum is σ = 495512064. Its totient is φ = 309694800.

The previous prime is 400022587. The next prime is 400022621. The reversal of 400022605 is 506220004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 400022605 - 2⁷ = 400022477 is a prime.

It is a Duffinian number.

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 in 7 ways as a sum of consecutive naturals, for example, 1290241 + ... + 1290550.

It is an arithmetic number, because the mean of its divisors is an integer number (61939008).

Almost surely, 2^400022605 is an apocalyptic number.

It is an amenable number.

400022605 is a deficient number, since it is larger than the sum of its proper divisors (95489459).

400022605 is a wasteful number, since it uses less digits than its factorization.

400022605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2580827.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 400022605 is about 20000.5651170161. The cubic root of 400022605 is about 736.8201790553.

Adding to 400022605 its reverse (506220004), we get a palindrome (906242609).

The spelling of 400022605 in words is "four hundred million, twenty-two thousand, six hundred five".