400151000 has 32 divisors (see below), whose sum is σ = 936355680. Its totient is φ = 160060000.

The previous prime is 400150969. The next prime is 400151009. The reversal of 400151000 is 151004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400151009) 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, 199076 + ... + 201075.

It is an arithmetic number, because the mean of its divisors is an integer number (29261115).

Almost surely, 2^400151000 is an apocalyptic number.

400151000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

400151000 is an abundant number, since it is smaller than the sum of its proper divisors (536204680).

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

400151000 is a wasteful number, since it uses less digits than its factorization.

400151000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400172 (or 400158 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 400151000 is about 20003.7746438016. The cubic root of 400151000 is about 736.8990028566.

The spelling of 400151000 in words is "four hundred million, one hundred fifty-one thousand".