400035161 has 2 divisors, whose sum is σ = 400035162. Its totient is φ = 400035160.

The previous prime is 400035151. The next prime is 400035169. The reversal of 400035161 is 161530004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 382437136 + 17598025 = 19556^2 + 4195^2 .

It is a cyclic number.

It is not a de Polignac number, because 400035161 - 2²² = 395840857 is a prime.

It is not a weakly prime, because it can be changed into another prime (400035169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200017580 + 200017581.

It is an arithmetic number, because the mean of its divisors is an integer number (200017581).

Almost surely, 2^400035161 is an apocalyptic number.

It is an amenable number.

400035161 is a deficient number, since it is larger than the sum of its proper divisors (1).

400035161 is an equidigital number, since it uses as much as digits as its factorization.

400035161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 400035161 is about 20000.8790056837. The cubic root of 400035161 is about 736.8278881341.

Adding to 400035161 its reverse (161530004), we get a palindrome (561565165).

The spelling of 400035161 in words is "four hundred million, thirty-five thousand, one hundred sixty-one".