415216009 has 4 divisors (see below), whose sum is σ = 447155716. Its totient is φ = 383276304.

The previous prime is 415216003. The next prime is 415216013. The reversal of 415216009 is 900612514.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 900612514 = 2 ⋅450306257.

It can be written as a sum of positive squares in 2 ways, for example, as 200505600 + 214710409 = 14160^2 + 14653^2 .

It is a cyclic number.

It is not a de Polignac number, because 415216009 - 2¹¹ = 415213961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (415216003) 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, 15969834 + ... + 15969859.

It is an arithmetic number, because the mean of its divisors is an integer number (111788929).

Almost surely, 2^415216009 is an apocalyptic number.

It is an amenable number.

415216009 is a deficient number, since it is larger than the sum of its proper divisors (31939707).

415216009 is a wasteful number, since it uses less digits than its factorization.

415216009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31939706.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 415216009 is about 20376.8498301381. The cubic root of 415216009 is about 746.0329853140.

The spelling of 415216009 in words is "four hundred fifteen million, two hundred sixteen thousand, nine".