53931839 has 4 divisors (see below), whose sum is σ = 58080456. Its totient is φ = 49783224.

The previous prime is 53931827. The next prime is 53931853. The reversal of 53931839 is 93813935.

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 53931839 - 2¹² = 53927743 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53931796 and 53931805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53931809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2074289 + ... + 2074314.

It is an arithmetic number, because the mean of its divisors is an integer number (14520114).

Almost surely, 2^53931839 is an apocalyptic number.

53931839 is a deficient number, since it is larger than the sum of its proper divisors (4148617).

53931839 is a wasteful number, since it uses less digits than its factorization.

53931839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4148616.

The product of its digits is 87480, while the sum is 41.

The square root of 53931839 is about 7343.8299953090. The cubic root of 53931839 is about 377.8172156412.

The spelling of 53931839 in words is "fifty-three million, nine hundred thirty-one thousand, eight hundred thirty-nine".