538259409 has 12 divisors (see below), whose sum is σ = 811289856. Its totient is φ = 343237752.

The previous prime is 538259377. The next prime is 538259471. The reversal of 538259409 is 904952835.

538259409 is a `hidden beast` number, since 53 + 8 + 2 + 594 + 0 + 9 = 666.

It is not a de Polignac number, because 538259409 - 2⁵ = 538259377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (538259489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1299937 + ... + 1300350.

It is an arithmetic number, because the mean of its divisors is an integer number (67607488).

Almost surely, 2^538259409 is an apocalyptic number.

It is an amenable number.

538259409 is a deficient number, since it is larger than the sum of its proper divisors (273030447).

538259409 is a wasteful number, since it uses less digits than its factorization.

538259409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2600316 (or 2600313 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 45.

The square root of 538259409 is about 23200.4182936429. The cubic root of 538259409 is about 813.4494004645.

The spelling of 538259409 in words is "five hundred thirty-eight million, two hundred fifty-nine thousand, four hundred nine".