406187004 has 12 divisors (see below), whose sum is σ = 947769704. Its totient is φ = 135395664.

The previous prime is 406187003. The next prime is 406187009. The reversal of 406187004 is 400781604.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406187003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16924447 + ... + 16924470.

Almost surely, 2^406187004 is an apocalyptic number.

It is an amenable number.

406187004 is an abundant number, since it is smaller than the sum of its proper divisors (541582700).

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

406187004 is a wasteful number, since it uses less digits than its factorization.

406187004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33848924 (or 33848922 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 406187004 is about 20154.0815717313. The cubic root of 406187004 is about 740.5857329891.

The spelling of 406187004 in words is "four hundred six million, one hundred eighty-seven thousand, four".