47988739 has 12 divisors (see below), whose sum is σ = 52077024. Its totient is φ = 44192384.

The previous prime is 47988719. The next prime is 47988749. The reversal of 47988739 is 93788974.

It is not a de Polignac number, because 47988739 - 2²³ = 39600131 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 47988739.

It is not an unprimeable number, because it can be changed into a prime (47988709) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11817 + ... + 15349.

It is an arithmetic number, because the mean of its divisors is an integer number (4339752).

Almost surely, 2^47988739 is an apocalyptic number.

47988739 is a deficient number, since it is larger than the sum of its proper divisors (4088285).

47988739 is a wasteful number, since it uses less digits than its factorization.

47988739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3614 (or 3597 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 55.

The square root of 47988739 is about 6927.3904899320. The cubic root of 47988739 is about 363.3956960728.

The spelling of 47988739 in words is "forty-seven million, nine hundred eighty-eight thousand, seven hundred thirty-nine".