400554006 has 16 divisors (see below), whose sum is σ = 813065664. Its totient is φ = 131525064.

The previous prime is 400554001. The next prime is 400554047. The reversal of 400554006 is 600455004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400554001) 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 7 ways as a sum of consecutive naturals, for example, 497800 + ... + 498603.

It is an arithmetic number, because the mean of its divisors is an integer number (50816604).

Almost surely, 2^400554006 is an apocalyptic number.

400554006 is an abundant number, since it is smaller than the sum of its proper divisors (412511658).

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

400554006 is a wasteful number, since it uses less digits than its factorization.

400554006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 996475.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 400554006 is about 20013.8453576518. The cubic root of 400554006 is about 737.1463053978.

The spelling of 400554006 in words is "four hundred million, five hundred fifty-four thousand, six".