406040238 has 24 divisors (see below), whose sum is σ = 898473888. Its totient is φ = 132466752.

The previous prime is 406040237. The next prime is 406040249. The reversal of 406040238 is 832040604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406040231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 239131 + ... + 240822.

It is an arithmetic number, because the mean of its divisors is an integer number (37436412).

Almost surely, 2^406040238 is an apocalyptic number.

406040238 is an abundant number, since it is smaller than the sum of its proper divisors (492433650).

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

406040238 is a wasteful number, since it uses less digits than its factorization.

406040238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480008 (or 480005 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 406040238 is about 20150.4401440763. The cubic root of 406040238 is about 740.4965245716.

The spelling of 406040238 in words is "four hundred six million, forty thousand, two hundred thirty-eight".