53393439 has 64 divisors (see below), whose sum is σ = 87736320. Its totient is φ = 28512000.

The previous prime is 53393423. The next prime is 53393443. The reversal of 53393439 is 93439335.

It is a happy number.

It is not a de Polignac number, because 53393439 - 2⁴ = 53393423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 53393397 and 53393406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53393839) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 796884 + ... + 796950.

It is an arithmetic number, because the mean of its divisors is an integer number (1370880).

Almost surely, 2^53393439 is an apocalyptic number.

53393439 is a deficient number, since it is larger than the sum of its proper divisors (34342881).

53393439 is a wasteful number, since it uses less digits than its factorization.

53393439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172.

The product of its digits is 131220, while the sum is 39.

The square root of 53393439 is about 7307.0814283132. The cubic root of 53393439 is about 376.5557624604. Note that the first 3 decimals are identical.

It can be divided in two parts, 5339 and 3439, that added together give a palindrome (8778).

The spelling of 53393439 in words is "fifty-three million, three hundred ninety-three thousand, four hundred thirty-nine".