53436789 has 12 divisors (see below), whose sum is σ = 88213216. Its totient is φ = 30535272.

The previous prime is 53436781. The next prime is 53436847. The reversal of 53436789 is 98763435.

53436789 is a `hidden beast` number, since 534 + 36 + 7 + 89 = 666.

It is not a de Polignac number, because 53436789 - 2³ = 53436781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53436781) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 424039 + ... + 424164.

Almost surely, 2^53436789 is an apocalyptic number.

It is an amenable number.

53436789 is a deficient number, since it is larger than the sum of its proper divisors (34776427).

53436789 is a wasteful number, since it uses less digits than its factorization.

53436789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 848216 (or 848213 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The square root of 53436789 is about 7310.0471270711. The cubic root of 53436789 is about 376.6576431214.

The spelling of 53436789 in words is "fifty-three million, four hundred thirty-six thousand, seven hundred eighty-nine".