400563937 has 2 divisors, whose sum is σ = 400563938. Its totient is φ = 400563936.

The previous prime is 400563901. The next prime is 400564063. The reversal of 400563937 is 739365004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 398361681 + 2202256 = 19959^2 + 1484^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-400563937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 400563896 and 400563905.

It is not a weakly prime, because it can be changed into another prime (400569937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200281968 + 200281969.

It is an arithmetic number, because the mean of its divisors is an integer number (200281969).

Almost surely, 2^400563937 is an apocalyptic number.

It is an amenable number.

400563937 is a deficient number, since it is larger than the sum of its proper divisors (1).

400563937 is an equidigital number, since it uses as much as digits as its factorization.

400563937 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 68040, while the sum is 37.

The square root of 400563937 is about 20014.0934593601. The cubic root of 400563937 is about 737.1523974098.

The spelling of 400563937 in words is "four hundred million, five hundred sixty-three thousand, nine hundred thirty-seven".