45644039 has 8 divisors (see below), whose sum is σ = 53229600. Its totient is φ = 39123168.

The previous prime is 45644009. The next prime is 45644041. The reversal of 45644039 is 93044654.

45644039 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-45644039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45644009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66194 + ... + 66879.

It is an arithmetic number, because the mean of its divisors is an integer number (6653700).

Almost surely, 2^45644039 is an apocalyptic number.

45644039 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

45644039 is a deficient number, since it is larger than the sum of its proper divisors (7585561).

45644039 is an equidigital number, since it uses as much as digits as its factorization.

45644039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133094 (or 133080 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 45644039 is about 6756.0372260668. The cubic root of 45644039 is about 357.3781716037.

The spelling of 45644039 in words is "forty-five million, six hundred forty-four thousand, thirty-nine".