409829475845 has 8 divisors (see below), whose sum is σ = 492280861176. Its totient is φ = 327539920576.

The previous prime is 409829475841. The next prime is 409829475851. The reversal of 409829475845 is 548574928904.

It can be written as a sum of positive squares in 4 ways, for example, as 21503582881 + 388325892964 = 146641^2 + 623158^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 409829475845 - 2² = 409829475841 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 (409829475841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40451942 + ... + 40462071.

It is an arithmetic number, because the mean of its divisors is an integer number (61535107647).

Almost surely, 2^409829475845 is an apocalyptic number.

It is an amenable number.

409829475845 is a deficient number, since it is larger than the sum of its proper divisors (82451385331).

409829475845 is a wasteful number, since it uses less digits than its factorization.

409829475845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80915031.

The product of its (nonzero) digits is 116121600, while the sum is 65.

The spelling of 409829475845 in words is "four hundred nine billion, eight hundred twenty-nine million, four hundred seventy-five thousand, eight hundred forty-five".