47151839 has 4 divisors (see below), whose sum is σ = 53887824. Its totient is φ = 40415856.

The previous prime is 47151809. The next prime is 47151847. The reversal of 47151839 is 93815174.

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 47151839 - 2¹² = 47147743 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 (47151809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3367982 + ... + 3367995.

It is an arithmetic number, because the mean of its divisors is an integer number (13471956).

Almost surely, 2^47151839 is an apocalyptic number.

47151839 is a deficient number, since it is larger than the sum of its proper divisors (6735985).

47151839 is an equidigital number, since it uses as much as digits as its factorization.

47151839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6735984.

The product of its digits is 30240, while the sum is 38.

The square root of 47151839 is about 6866.7196680802. The cubic root of 47151839 is about 361.2708147631.

The spelling of 47151839 in words is "forty-seven million, one hundred fifty-one thousand, eight hundred thirty-nine".