409068761 has 4 divisors (see below), whose sum is σ = 418582032. Its totient is φ = 399555492.

The previous prime is 409068749. The next prime is 409068769. The reversal of 409068761 is 167860904.

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 409068761 - 2¹⁴ = 409052377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (409068769) 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, 4756571 + ... + 4756656.

It is an arithmetic number, because the mean of its divisors is an integer number (104645508).

Almost surely, 2^409068761 is an apocalyptic number.

It is an amenable number.

409068761 is a deficient number, since it is larger than the sum of its proper divisors (9513271).

409068761 is an equidigital number, since it uses as much as digits as its factorization.

409068761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9513270.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 409068761 is about 20225.4483510255. The cubic root of 409068761 is about 742.3330076750. Note that the first 3 decimals are identical.

The spelling of 409068761 in words is "four hundred nine million, sixty-eight thousand, seven hundred sixty-one".