54439647 has 4 divisors (see below), whose sum is σ = 72586200. Its totient is φ = 36293096.

The previous prime is 54439631. The next prime is 54439663. The reversal of 54439647 is 74693445.

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

It is an interprime number because it is at equal distance from previous prime (54439631) and next prime (54439663).

It is a cyclic number.

It is not a de Polignac number, because 54439647 - 2⁴ = 54439631 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 54439599 and 54439608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54439607) 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, 9073272 + ... + 9073277.

It is an arithmetic number, because the mean of its divisors is an integer number (18146550).

Almost surely, 2^54439647 is an apocalyptic number.

54439647 is a deficient number, since it is larger than the sum of its proper divisors (18146553).

54439647 is a wasteful number, since it uses less digits than its factorization.

54439647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18146552.

The product of its digits is 362880, while the sum is 42.

The square root of 54439647 is about 7378.3227768918. The cubic root of 54439647 is about 378.9993223835. Note that the first 3 decimals are identical.

The spelling of 54439647 in words is "fifty-four million, four hundred thirty-nine thousand, six hundred forty-seven".