406038440 has 32 divisors (see below), whose sum is σ = 914237280. Its totient is φ = 162299712.

The previous prime is 406038371. The next prime is 406038443. The reversal of 406038440 is 44830604.

It is not an unprimeable number, because it can be changed into a prime (406038443) 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, 73619 + ... + 78941.

It is an arithmetic number, because the mean of its divisors is an integer number (28569915).

Almost surely, 2^406038440 is an apocalyptic number.

406038440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

406038440 is an abundant number, since it is smaller than the sum of its proper divisors (508198840).

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

406038440 is a wasteful number, since it uses less digits than its factorization.

406038440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7241 (or 7237 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 406038440 is about 20150.3955296168. The cubic root of 406038440 is about 740.4954315644.

The spelling of 406038440 in words is "four hundred six million, thirty-eight thousand, four hundred forty".