400161159 has 12 divisors (see below), whose sum is σ = 587486952. Its totient is φ = 262400400.

The previous prime is 400161143. The next prime is 400161173. The reversal of 400161159 is 951161004.

400161159 is a `hidden beast` number, since 40 + 0 + 1 + 611 + 5 + 9 = 666.

It is not a de Polignac number, because 400161159 - 2⁴ = 400161143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400161059) 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 11 ways as a sum of consecutive naturals, for example, 363897 + ... + 364994.

It is an arithmetic number, because the mean of its divisors is an integer number (48957246).

Almost surely, 2^400161159 is an apocalyptic number.

400161159 is a deficient number, since it is larger than the sum of its proper divisors (187325793).

400161159 is a wasteful number, since it uses less digits than its factorization.

400161159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728958 (or 728955 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 400161159 is about 20004.0285692657. The cubic root of 400161159 is about 736.9052389139.

The spelling of 400161159 in words is "four hundred million, one hundred sixty-one thousand, one hundred fifty-nine".