400038 has 16 divisors (see below), whose sum is σ = 813936. Its totient is φ = 131040.

The previous prime is 400033. The next prime is 400051. The reversal of 400038 is 830004.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 400038.

It is not an unprimeable number, because it can be changed into a prime (400031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181 + ... + 912.

It is an arithmetic number, because the mean of its divisors is an integer number (50871).

2⁴⁰⁰⁰³⁸ is an apocalyptic number.

400038 is an abundant number, since it is smaller than the sum of its proper divisors (413898).

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

400038 is a wasteful number, since it uses less digits than its factorization.

400038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1159.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 400038 is about 632.4855729580. The cubic root of 400038 is about 73.6829631189.

The spelling of 400038 in words is "four hundred thousand, thirty-eight".