406939404 has 96 divisors (see below), whose sum is σ = 1030288896. Its totient is φ = 124554240.

The previous prime is 406939363. The next prime is 406939451. The reversal of 406939404 is 404939604.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2248194 + ... + 2248374.

It is an arithmetic number, because the mean of its divisors is an integer number (10732176).

Almost surely, 2^406939404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 406939404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (515144448).

406939404 is an abundant number, since it is smaller than the sum of its proper divisors (623349492).

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

406939404 is a wasteful number, since it uses less digits than its factorization.

406939404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415 (or 413 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 39.

The square root of 406939404 is about 20172.7391298257. The cubic root of 406939404 is about 741.0427252943.

The spelling of 406939404 in words is "four hundred six million, nine hundred thirty-nine thousand, four hundred four".