54439642 has 4 divisors (see below), whose sum is σ = 81659466. Its totient is φ = 27219820.

The previous prime is 54439631. The next prime is 54439663. The reversal of 54439642 is 24693445.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 53275401 + 1164241 = 7299^2 + 1079^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13609909 + ... + 13609912.

Almost surely, 2^54439642 is an apocalyptic number.

54439642 is a deficient number, since it is larger than the sum of its proper divisors (27219824).

54439642 is a wasteful number, since it uses less digits than its factorization.

54439642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27219823.

The product of its digits is 103680, while the sum is 37.

The square root of 54439642 is about 7378.3224380614. The cubic root of 54439642 is about 378.9993107805. Note that the first 3 decimals are identical.

It can be divided in two parts, 544 and 39642, that added together give a triangular number (40186 = T₂₈₃).

The spelling of 54439642 in words is "fifty-four million, four hundred thirty-nine thousand, six hundred forty-two".