400666022 has 16 divisors (see below), whose sum is σ = 616215600. Its totient is φ = 195269760.

The previous prime is 400666009. The next prime is 400666027. The reversal of 400666022 is 220666004.

It is a super-2 number, since 2×400666022² = 321066522370608968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 400665982 and 400666000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400666027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170129 + ... + 172467.

It is an arithmetic number, because the mean of its divisors is an integer number (38513475).

Almost surely, 2^400666022 is an apocalyptic number.

400666022 is a deficient number, since it is larger than the sum of its proper divisors (215549578).

400666022 is a wasteful number, since it uses less digits than its factorization.

400666022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4471.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 400666022 is about 20016.6436247439. The cubic root of 400666022 is about 737.2150139725.

The spelling of 400666022 in words is "four hundred million, six hundred sixty-six thousand, twenty-two".