405038 has 4 divisors (see below), whose sum is σ = 607560. Its totient is φ = 202518.

The previous prime is 405037. The next prime is 405047. The reversal of 405038 is 830504.

It is a semiprime because it is the product of two primes.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101258 + ... + 101261.

It is an arithmetic number, because the mean of its divisors is an integer number (151890).

2⁴⁰⁵⁰³⁸ is an apocalyptic number.

405038 is a deficient number, since it is larger than the sum of its proper divisors (202522).

405038 is a wasteful number, since it uses less digits than its factorization.

405038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202521.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 405038 is about 636.4259579873. The cubic root of 405038 is about 73.9886761343.

The spelling of 405038 in words is "four hundred five thousand, thirty-eight".