54909939 has 24 divisors (see below), whose sum is σ = 85987008. Its totient is φ = 31074960.

The previous prime is 54909937. The next prime is 54909971. The reversal of 54909939 is 93990945.

It is not a de Polignac number, because 54909939 - 2¹ = 54909937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (54909937) by changing a digit.

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 in 23 ways as a sum of consecutive naturals, for example, 13984 + ... + 17474.

It is an arithmetic number, because the mean of its divisors is an integer number (3582792).

Almost surely, 2^54909939 is an apocalyptic number.

54909939 is a deficient number, since it is larger than the sum of its proper divisors (31077069).

54909939 is a wasteful number, since it uses less digits than its factorization.

54909939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3615 (or 3608 counting only the distinct ones).

The product of its (nonzero) digits is 393660, while the sum is 48.

The square root of 54909939 is about 7410.1240880298. The cubic root of 54909939 is about 380.0875583093.

The spelling of 54909939 in words is "fifty-four million, nine hundred nine thousand, nine hundred thirty-nine".