53439384 has 64 divisors (see below), whose sum is σ = 136886400. Its totient is φ = 17381376.

The previous prime is 53439367. The next prime is 53439389. The reversal of 53439384 is 48393435.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53439389) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 276792 + ... + 276984.

It is an arithmetic number, because the mean of its divisors is an integer number (2138850).

Almost surely, 2^53439384 is an apocalyptic number.

It is an amenable number.

53439384 is an abundant number, since it is smaller than the sum of its proper divisors (83447016).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53439384 is a wasteful number, since it uses less digits than its factorization.

53439384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424 (or 420 counting only the distinct ones).

The product of its digits is 155520, while the sum is 39.

The square root of 53439384 is about 7310.2246203520. The cubic root of 53439384 is about 376.6637401118.

The spelling of 53439384 in words is "fifty-three million, four hundred thirty-nine thousand, three hundred eighty-four".