54949439 has 4 divisors (see below), whose sum is σ = 56118624. Its totient is φ = 53780256.

The previous prime is 54949357. The next prime is 54949451. The reversal of 54949439 is 93494945.

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 54949439 - 2⁸ = 54949183 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47), and also a Moran number because the ratio is a prime number: 1169137 = 54949439 / (5 + 4 + 9 + 4 + 9 + 4 + 3 + 9).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 54949393 and 54949402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54949459) 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, 584522 + ... + 584615.

It is an arithmetic number, because the mean of its divisors is an integer number (14029656).

Almost surely, 2^54949439 is an apocalyptic number.

54949439 is a deficient number, since it is larger than the sum of its proper divisors (1169185).

54949439 is a wasteful number, since it uses less digits than its factorization.

54949439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1169184.

The product of its digits is 699840, while the sum is 47.

The square root of 54949439 is about 7412.7888813860. The cubic root of 54949439 is about 380.1786763608.

The spelling of 54949439 in words is "fifty-four million, nine hundred forty-nine thousand, four hundred thirty-nine".