406379871 has 24 divisors (see below), whose sum is σ = 614952000. Its totient is φ = 258253632.

The previous prime is 406379861. The next prime is 406379873. The reversal of 406379871 is 178973604.

406379871 is a `hidden beast` number, since 4 + 0 + 637 + 9 + 8 + 7 + 1 = 666.

It is not a de Polignac number, because 406379871 - 2¹⁴ = 406363487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406379873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10765 + ... + 30473.

It is an arithmetic number, because the mean of its divisors is an integer number (25623000).

Almost surely, 2^406379871 is an apocalyptic number.

406379871 is a deficient number, since it is larger than the sum of its proper divisors (208572129).

406379871 is a wasteful number, since it uses less digits than its factorization.

406379871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19823 (or 19820 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 406379871 is about 20158.8658163102. The cubic root of 406379871 is about 740.7029301963.

The spelling of 406379871 in words is "four hundred six million, three hundred seventy-nine thousand, eight hundred seventy-one".