400334154 has 64 divisors (see below), whose sum is σ = 928160640. Its totient is φ = 113944320.

The previous prime is 400334153. The next prime is 400334189. The reversal of 400334154 is 451433004.

It is not an unprimeable number, because it can be changed into a prime (400334153) 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 31 ways as a sum of consecutive naturals, for example, 67992 + ... + 73644.

It is an arithmetic number, because the mean of its divisors is an integer number (14502510).

Almost surely, 2^400334154 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 400334154, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (464080320).

400334154 is an abundant number, since it is smaller than the sum of its proper divisors (527826486).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400334154 is a wasteful number, since it uses less digits than its factorization.

400334154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5735.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 400334154 is about 20008.3521060581. The cubic root of 400334154 is about 737.0114149322.

Adding to 400334154 its reverse (451433004), we get a palindrome (851767158).

The spelling of 400334154 in words is "four hundred million, three hundred thirty-four thousand, one hundred fifty-four".