409061245 has 8 divisors (see below), whose sum is σ = 491100984. Its totient is φ = 327097344.

The previous prime is 409061231. The next prime is 409061249. The reversal of 409061245 is 542160904.

It can be written as a sum of positive squares in 4 ways, for example, as 22781529 + 386279716 = 4773^2 + 19654^2 .

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 409061245 - 2⁷ = 409061117 is a prime.

It is a super-2 number, since 2×409061245² = 334662204321900050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (409061249) 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, 6324 + ... + 29293.

It is an arithmetic number, because the mean of its divisors is an integer number (61387623).

Almost surely, 2^409061245 is an apocalyptic number.

It is an amenable number.

409061245 is a deficient number, since it is larger than the sum of its proper divisors (82039739).

409061245 is a wasteful number, since it uses less digits than its factorization.

409061245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37919.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 409061245 is about 20225.2625446495. The cubic root of 409061245 is about 742.3284612437.

The spelling of 409061245 in words is "four hundred nine million, sixty-one thousand, two hundred forty-five".