409066501 has 4 divisors (see below), whose sum is σ = 409122252. Its totient is φ = 409010752.

The previous prime is 409066433. The next prime is 409066507. The reversal of 409066501 is 105660904.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19793601 + 389272900 = 4449^2 + 19730^2 .

It is a cyclic number.

It is not a de Polignac number, because 409066501 - 2²¹ = 406969349 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 (409066507) 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, 14836 + ... + 32221.

It is an arithmetic number, because the mean of its divisors is an integer number (102280563).

Almost surely, 2^409066501 is an apocalyptic number.

It is an amenable number.

409066501 is a deficient number, since it is larger than the sum of its proper divisors (55751).

409066501 is an equidigital number, since it uses as much as digits as its factorization.

409066501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55750.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 409066501 is about 20225.3924807406. The cubic root of 409066501 is about 742.3316406060.

The spelling of 409066501 in words is "four hundred nine million, sixty-six thousand, five hundred one".