409143615 has 8 divisors (see below), whose sum is σ = 654629808. Its totient is φ = 218209920.

The previous prime is 409143613. The next prime is 409143661. The reversal of 409143615 is 516341904.

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

It is not a de Polignac number, because 409143615 - 2¹ = 409143613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (409143613) 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, 13638106 + ... + 13638135.

It is an arithmetic number, because the mean of its divisors is an integer number (81828726).

Almost surely, 2^409143615 is an apocalyptic number.

409143615 is a deficient number, since it is larger than the sum of its proper divisors (245486193).

409143615 is a wasteful number, since it uses less digits than its factorization.

409143615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27276249.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 409143615 is about 20227.2987568780. The cubic root of 409143615 is about 742.3782838497.

The spelling of 409143615 in words is "four hundred nine million, one hundred forty-three thousand, six hundred fifteen".