45147239 has 4 divisors (see below), whose sum is σ = 45270624. Its totient is φ = 45023856.

The previous prime is 45147233. The next prime is 45147241. The reversal of 45147239 is 93274154.

45147239 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45147239 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 45147199 and 45147208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45147233) 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 3 ways as a sum of consecutive naturals, for example, 61142 + ... + 61875.

It is an arithmetic number, because the mean of its divisors is an integer number (11317656).

Almost surely, 2^45147239 is an apocalyptic number.

45147239 is a deficient number, since it is larger than the sum of its proper divisors (123385).

45147239 is a wasteful number, since it uses less digits than its factorization.

45147239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123384.

The product of its digits is 30240, while the sum is 35.

The square root of 45147239 is about 6719.1695171353. The cubic root of 45147239 is about 356.0768439723.

The spelling of 45147239 in words is "forty-five million, one hundred forty-seven thousand, two hundred thirty-nine".