400204154 has 16 divisors (see below), whose sum is σ = 700662528. Its totient is φ = 167866512.

The previous prime is 400204153. The next prime is 400204159. The reversal of 400204154 is 451402004.

It is not an unprimeable number, because it can be changed into a prime (400204153) 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 7 ways as a sum of consecutive naturals, for example, 303449 + ... + 304764.

It is an arithmetic number, because the mean of its divisors is an integer number (43791408).

Almost surely, 2^400204154 is an apocalyptic number.

400204154 is a deficient number, since it is larger than the sum of its proper divisors (300458374).

400204154 is a wasteful number, since it uses less digits than its factorization.

400204154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608269.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 400204154 is about 20005.1031989340. The cubic root of 400204154 is about 736.9316300360.

Adding to 400204154 its reverse (451402004), we get a palindrome (851606158).

The spelling of 400204154 in words is "four hundred million, two hundred four thousand, one hundred fifty-four".