47943387 has 16 divisors (see below), whose sum is σ = 71734560. Its totient is φ = 31644000.

The previous prime is 47943319. The next prime is 47943419. The reversal of 47943387 is 78334974.

It is a happy number.

It is not a de Polignac number, because 47943387 - 2⁸ = 47943131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47943487) 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, 6064 + ... + 11517.

It is an arithmetic number, because the mean of its divisors is an integer number (4483410).

Almost surely, 2^47943387 is an apocalyptic number.

47943387 is a deficient number, since it is larger than the sum of its proper divisors (23791173).

47943387 is a wasteful number, since it uses less digits than its factorization.

47943387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17691 (or 17685 counting only the distinct ones).

The product of its digits is 508032, while the sum is 45.

The square root of 47943387 is about 6924.1163335114. The cubic root of 47943387 is about 363.2811836795.

The spelling of 47943387 in words is "forty-seven million, nine hundred forty-three thousand, three hundred eighty-seven".