400153161 has 4 divisors (see below), whose sum is σ = 533537552. Its totient is φ = 266768772.

The previous prime is 400153139. The next prime is 400153189. The reversal of 400153161 is 161351004.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 400153161 - 2²⁷ = 265935433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400153111) 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 3 ways as a sum of consecutive naturals, for example, 66692191 + ... + 66692196.

It is an arithmetic number, because the mean of its divisors is an integer number (133384388).

Almost surely, 2^400153161 is an apocalyptic number.

It is an amenable number.

400153161 is a deficient number, since it is larger than the sum of its proper divisors (133384391).

400153161 is a wasteful number, since it uses less digits than its factorization.

400153161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133384390.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 400153161 is about 20003.8286585343. The cubic root of 400153161 is about 736.9003293858.

The spelling of 400153161 in words is "four hundred million, one hundred fifty-three thousand, one hundred sixty-one".