409215245 has 16 divisors (see below), whose sum is σ = 527275008. Its totient is φ = 303770880.

The previous prime is 409215223. The next prime is 409215251. The reversal of 409215245 is 542512904.

It is not a de Polignac number, because 409215245 - 2¹⁸ = 408953101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27869 + ... + 39938.

It is an arithmetic number, because the mean of its divisors is an integer number (32954688).

Almost surely, 2^409215245 is an apocalyptic number.

It is an amenable number.

409215245 is a deficient number, since it is larger than the sum of its proper divisors (118059763).

409215245 is a wasteful number, since it uses less digits than its factorization.

409215245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67900.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 409215245 is about 20229.0693063225. The cubic root of 409215245 is about 742.4216047860.

The spelling of 409215245 in words is "four hundred nine million, two hundred fifteen thousand, two hundred forty-five".