285413409 has 16 divisors (see below), whose sum is σ = 423778240. Its totient is φ = 189851040.

The previous prime is 285413407. The next prime is 285413431. The reversal of 285413409 is 904314582.

It is not a de Polignac number, because 285413409 - 2¹ = 285413407 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (285413407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 774 + ... + 23904.

It is an arithmetic number, because the mean of its divisors is an integer number (26486140).

Almost surely, 2^285413409 is an apocalyptic number.

It is an amenable number.

285413409 is a deficient number, since it is larger than the sum of its proper divisors (138364831).

285413409 is a wasteful number, since it uses less digits than its factorization.

285413409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23597 (or 23591 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 285413409 is about 16894.1826970114. The cubic root of 285413409 is about 658.4024793188.

The spelling of 285413409 in words is "two hundred eighty-five million, four hundred thirteen thousand, four hundred nine".