406586940 has 24 divisors (see below), whose sum is σ = 1138443600. Its totient is φ = 108423168.

The previous prime is 406586911. The next prime is 406586963. The reversal of 406586940 is 49685604.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 406586892 and 406586901.

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, 3388165 + ... + 3388284.

It is an arithmetic number, because the mean of its divisors is an integer number (47435150).

Almost surely, 2^406586940 is an apocalyptic number.

It is an amenable number.

406586940 is an abundant number, since it is smaller than the sum of its proper divisors (731856660).

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

406586940 is a wasteful number, since it uses less digits than its factorization.

406586940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6776461 (or 6776459 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 406586940 is about 20164.0010910533. The cubic root of 406586940 is about 740.8287160949.

The spelling of 406586940 in words is "four hundred six million, five hundred eighty-six thousand, nine hundred forty".