45039149 has 4 divisors (see below), whose sum is σ = 45112764. Its totient is φ = 44965536.

The previous prime is 45039143. The next prime is 45039157. The reversal of 45039149 is 94193054.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6375625 + 38663524 = 2525^2 + 6218^2 .

It is a cyclic number.

It is not a de Polignac number, because 45039149 - 2⁸ = 45038893 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45039143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35882 + ... + 37115.

It is an arithmetic number, because the mean of its divisors is an integer number (11278191).

Almost surely, 2^45039149 is an apocalyptic number.

It is an amenable number.

45039149 is a deficient number, since it is larger than the sum of its proper divisors (73615).

45039149 is an equidigital number, since it uses as much as digits as its factorization.

45039149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73614.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 45039149 is about 6711.1212923028. The cubic root of 45039149 is about 355.7924478226.

The spelling of 45039149 in words is "forty-five million, thirty-nine thousand, one hundred forty-nine".