47139816 has 16 divisors (see below), whose sum is σ = 117849600. Its totient is φ = 15713264.

The previous prime is 47139803. The next prime is 47139839. The reversal of 47139816 is 61893174.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 982056 + ... + 982103.

It is an arithmetic number, because the mean of its divisors is an integer number (7365600).

Almost surely, 2^47139816 is an apocalyptic number.

It is an amenable number.

47139816 is an abundant number, since it is smaller than the sum of its proper divisors (70709784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

47139816 is a wasteful number, since it uses less digits than its factorization.

47139816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1964168 (or 1964164 counting only the distinct ones).

The product of its digits is 36288, while the sum is 39.

The square root of 47139816 is about 6865.8441578585. The cubic root of 47139816 is about 361.2401059698.

The spelling of 47139816 in words is "forty-seven million, one hundred thirty-nine thousand, eight hundred sixteen".