406675909 has 4 divisors (see below), whose sum is σ = 407454016. Its totient is φ = 405897804.

The previous prime is 406675901. The next prime is 406675933. The reversal of 406675909 is 909576604.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 406675909 - 2³ = 406675901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406675901) 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, 388269 + ... + 389314.

It is an arithmetic number, because the mean of its divisors is an integer number (101863504).

Almost surely, 2^406675909 is an apocalyptic number.

It is an amenable number.

406675909 is a deficient number, since it is larger than the sum of its proper divisors (778107).

406675909 is an equidigital number, since it uses as much as digits as its factorization.

406675909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778106.

The product of its (nonzero) digits is 408240, while the sum is 46.

The square root of 406675909 is about 20166.2071049565. The cubic root of 406675909 is about 740.8827479854.

The spelling of 406675909 in words is "four hundred six million, six hundred seventy-five thousand, nine hundred nine".