47245439 has 4 divisors (see below), whose sum is σ = 47509560. Its totient is φ = 46981320.

The previous prime is 47245423. The next prime is 47245441. The reversal of 47245439 is 93454274.

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

It is a cyclic number.

It is not a de Polignac number, because 47245439 - 2⁴ = 47245423 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 (47245339) 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, 131792 + ... + 132149.

It is an arithmetic number, because the mean of its divisors is an integer number (11877390).

Almost surely, 2^47245439 is an apocalyptic number.

47245439 is a deficient number, since it is larger than the sum of its proper divisors (264121).

47245439 is a wasteful number, since it uses less digits than its factorization.

47245439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264120.

The product of its digits is 120960, while the sum is 38.

The square root of 47245439 is about 6873.5317704947. The cubic root of 47245439 is about 361.5097068087.

The spelling of 47245439 in words is "forty-seven million, two hundred forty-five thousand, four hundred thirty-nine".