47458439 has 4 divisors (see below), whose sum is σ = 54238224. Its totient is φ = 40678656.

The previous prime is 47458429. The next prime is 47458483. The reversal of 47458439 is 93485474.

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 47458439 - 2⁴ = 47458423 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 47458439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47458429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3389882 + ... + 3389895.

It is an arithmetic number, because the mean of its divisors is an integer number (13559556).

Almost surely, 2^47458439 is an apocalyptic number.

47458439 is a deficient number, since it is larger than the sum of its proper divisors (6779785).

47458439 is an equidigital number, since it uses as much as digits as its factorization.

47458439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6779784.

The product of its digits is 483840, while the sum is 44.

The square root of 47458439 is about 6889.0085643727. The cubic root of 47458439 is about 362.0521657981.

The spelling of 47458439 in words is "forty-seven million, four hundred fifty-eight thousand, four hundred thirty-nine".