47439930 has 32 divisors (see below), whose sum is σ = 114120000. Its totient is φ = 12621312.

The previous prime is 47439907. The next prime is 47439971. The reversal of 47439930 is 3993474.

47439930 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13386 + ... + 16554.

It is an arithmetic number, because the mean of its divisors is an integer number (3566250).

Almost surely, 2^47439930 is an apocalyptic number.

47439930 is an abundant number, since it is smaller than the sum of its proper divisors (66680070).

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

47439930 is a wasteful number, since it uses less digits than its factorization.

47439930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3678.

The product of its (nonzero) digits is 81648, while the sum is 39.

The square root of 47439930 is about 6887.6650615430. The cubic root of 47439930 is about 362.0050923655.

It can be divided in two parts, 474 and 39930, that added together give a palindrome (40404).

The spelling of 47439930 in words is "forty-seven million, four hundred thirty-nine thousand, nine hundred thirty".