400450038 has 32 divisors (see below), whose sum is σ = 850923360. Its totient is φ = 125395200.

The previous prime is 400450021. The next prime is 400450111. The reversal of 400450038 is 830054004.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 24663 + ... + 37538.

It is an arithmetic number, because the mean of its divisors is an integer number (26591355).

Almost surely, 2^400450038 is an apocalyptic number.

400450038 is an abundant number, since it is smaller than the sum of its proper divisors (450473322).

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

400450038 is a wasteful number, since it uses less digits than its factorization.

400450038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62272.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 400450038 is about 20011.2477871821. The cubic root of 400450038 is about 737.0825218565.

The spelling of 400450038 in words is "four hundred million, four hundred fifty thousand, thirty-eight".