47438836 has 12 divisors (see below), whose sum is σ = 83069280. Its totient is φ = 23704760.

The previous prime is 47438827. The next prime is 47438837. The reversal of 47438836 is 63883474.

It is a happy number.

It is a super-2 number, since 2×47438836² = 4500886322069792, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 47438792 and 47438801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47438837) 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 3 ways as a sum of consecutive naturals, for example, 7185 + ... + 12103.

It is an arithmetic number, because the mean of its divisors is an integer number (6922440).

Almost surely, 2^47438836 is an apocalyptic number.

It is an amenable number.

47438836 is a deficient number, since it is larger than the sum of its proper divisors (35630444).

47438836 is a wasteful number, since it uses less digits than its factorization.

47438836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7334 (or 7332 counting only the distinct ones).

The product of its digits is 387072, while the sum is 43.

The square root of 47438836 is about 6887.5856437506. The cubic root of 47438836 is about 362.0023096421.

The spelling of 47438836 in words is "forty-seven million, four hundred thirty-eight thousand, eight hundred thirty-six".