45239949 has 6 divisors (see below), whose sum is σ = 65346606. Its totient is φ = 30159960.

The previous prime is 45239939. The next prime is 45239951. The reversal of 45239949 is 94993254.

It is a happy number.

45239949 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 35784324 + 9455625 = 5982^2 + 3075^2 .

It is not a de Polignac number, because 45239949 - 2⁸ = 45239693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45239939) 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 5 ways as a sum of consecutive naturals, for example, 2513322 + ... + 2513339.

It is an arithmetic number, because the mean of its divisors is an integer number (10891101).

Almost surely, 2^45239949 is an apocalyptic number.

It is an amenable number.

45239949 is a deficient number, since it is larger than the sum of its proper divisors (20106657).

45239949 is a wasteful number, since it uses less digits than its factorization.

45239949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5026667 (or 5026664 counting only the distinct ones).

The product of its digits is 349920, while the sum is 45.

The square root of 45239949 is about 6726.0648970999. The cubic root of 45239949 is about 356.3204123056.

It can be divided in two parts, 452 and 39949, that added together give a square (40401 = 201²).

The spelling of 45239949 in words is "forty-five million, two hundred thirty-nine thousand, nine hundred forty-nine".