47828939 has 16 divisors (see below), whose sum is σ = 53415936. Its totient is φ = 42614400.

The previous prime is 47828923. The next prime is 47828953. The reversal of 47828939 is 93982874.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 47828939 - 2⁴ = 47828923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47828959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23804 + ... + 25734.

It is an arithmetic number, because the mean of its divisors is an integer number (3338496).

Almost surely, 2^47828939 is an apocalyptic number.

47828939 is a deficient number, since it is larger than the sum of its proper divisors (5586997).

47828939 is a wasteful number, since it uses less digits than its factorization.

47828939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2026.

The product of its digits is 870912, while the sum is 50.

The square root of 47828939 is about 6915.8469474100. The cubic root of 47828939 is about 362.9918846068.

The spelling of 47828939 in words is "forty-seven million, eight hundred twenty-eight thousand, nine hundred thirty-nine".