406005940 has 24 divisors (see below), whose sum is σ = 853155072. Its totient is φ = 162299040.

The previous prime is 406005937. The next prime is 406005953. The reversal of 406005940 is 49500604.

It is a junction number, because it is equal to n+sod(n) for n = 406005899 and 406005908.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31077 + ... + 42163.

It is an arithmetic number, because the mean of its divisors is an integer number (35548128).

Almost surely, 2^406005940 is an apocalyptic number.

It is an amenable number.

406005940 is an abundant number, since it is smaller than the sum of its proper divisors (447149132).

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

406005940 is a wasteful number, since it uses less digits than its factorization.

406005940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12927 (or 12925 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 406005940 is about 20149.5890776959. The cubic root of 406005940 is about 740.4756742038.

The spelling of 406005940 in words is "four hundred six million, five thousand, nine hundred forty".