400222037 has 4 divisors (see below), whose sum is σ = 406783116. Its totient is φ = 393660960.

The previous prime is 400222019. The next prime is 400222063. The reversal of 400222037 is 730222004.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 48246916 + 351975121 = 6946^2 + 18761^2 .

It is a cyclic number.

It is not a de Polignac number, because 400222037 - 2¹² = 400217941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400212037) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3280448 + ... + 3280569.

It is an arithmetic number, because the mean of its divisors is an integer number (101695779).

Almost surely, 2^400222037 is an apocalyptic number.

It is an amenable number.

400222037 is a deficient number, since it is larger than the sum of its proper divisors (6561079).

400222037 is an equidigital number, since it uses as much as digits as its factorization.

400222037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6561078.

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 400222037 is about 20005.5501548945. The cubic root of 400222037 is about 736.9426063939.

The spelling of 400222037 in words is "four hundred million, two hundred twenty-two thousand, thirty-seven".