53902439 has 4 divisors (see below), whose sum is σ = 54314040. Its totient is φ = 53490840.

The previous prime is 53902403. The next prime is 53902463. The reversal of 53902439 is 93420935.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 53902439 - 2¹² = 53898343 is a prime.

It is a Duffinian number.

53902439 is a modest number, since divided by 2439 gives 539 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 53902399 and 53902408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53904439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205604 + ... + 205865.

It is an arithmetic number, because the mean of its divisors is an integer number (13578510).

Almost surely, 2^53902439 is an apocalyptic number.

53902439 is a deficient number, since it is larger than the sum of its proper divisors (411601).

53902439 is a wasteful number, since it uses less digits than its factorization.

53902439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411600.

The product of its (nonzero) digits is 29160, while the sum is 35.

The square root of 53902439 is about 7341.8280421159. The cubic root of 53902439 is about 377.7485496771.

The spelling of 53902439 in words is "fifty-three million, nine hundred two thousand, four hundred thirty-nine".