47499930 has 48 divisors (see below), whose sum is σ = 124795944. Its totient is φ = 12533760.

The previous prime is 47499929. The next prime is 47499937. The reversal of 47499930 is 3999474.

47499930 is a `hidden beast` number, since 474 + 99 + 93 + 0 = 666.

47499930 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 41254929 + 6245001 = 6423^2 + 2499^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (47499937) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 6010 + ... + 11450.

Almost surely, 2^47499930 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47499930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62397972).

47499930 is an abundant number, since it is smaller than the sum of its proper divisors (77296014).

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

47499930 is a wasteful number, since it uses less digits than its factorization.

47499930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5551 (or 5548 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The square root of 47499930 is about 6892.0192977095. The cubic root of 47499930 is about 362.1576442699.

The spelling of 47499930 in words is "forty-seven million, four hundred ninety-nine thousand, nine hundred thirty".