54395639 has 8 divisors (see below), whose sum is σ = 55111680. Its totient is φ = 53683416.

The previous prime is 54395629. The next prime is 54395641. The reversal of 54395639 is 93659345.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 54395639 - 2⁴ = 54395623 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 54395639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54395609) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37082 + ... + 38520.

It is an arithmetic number, because the mean of its divisors is an integer number (6888960).

Almost surely, 2^54395639 is an apocalyptic number.

54395639 is a deficient number, since it is larger than the sum of its proper divisors (716041).

54395639 is a wasteful number, since it uses less digits than its factorization.

54395639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1909.

The product of its digits is 437400, while the sum is 44.

The square root of 54395639 is about 7375.3399243696. The cubic root of 54395639 is about 378.8971695136.

The spelling of 54395639 in words is "fifty-four million, three hundred ninety-five thousand, six hundred thirty-nine".