406379660 has 24 divisors (see below), whose sum is σ = 854253456. Its totient is φ = 162388800.

The previous prime is 406379653. The next prime is 406379683. The reversal of 406379660 is 66973604.

It is a happy number.

It is a super-3 number, since 3×406379660³ (a number of 27 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11354 + ... + 30686.

It is an arithmetic number, because the mean of its divisors is an integer number (35593894).

Almost surely, 2^406379660 is an apocalyptic number.

It is an amenable number.

406379660 is an abundant number, since it is smaller than the sum of its proper divisors (447873796).

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

406379660 is a wasteful number, since it uses less digits than its factorization.

406379660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20393 (or 20391 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 41.

The square root of 406379660 is about 20158.8605828802. The cubic root of 406379660 is about 740.7028020007.

The spelling of 406379660 in words is "four hundred six million, three hundred seventy-nine thousand, six hundred sixty".