47749842 has 24 divisors (see below), whose sum is σ = 118238016. Its totient is φ = 13642776.

The previous prime is 47749837. The next prime is 47749847. The reversal of 47749842 is 24894774.

47749842 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (47749837) and next prime (47749847).

It is a super-2 number, since 2×47749842² = 4560094822049928, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (47749847) 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 11 ways as a sum of consecutive naturals, for example, 189358 + ... + 189609.

It is an arithmetic number, because the mean of its divisors is an integer number (4926584).

Almost surely, 2^47749842 is an apocalyptic number.

47749842 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

47749842 is an abundant number, since it is smaller than the sum of its proper divisors (70488174).

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

47749842 is a wasteful number, since it uses less digits than its factorization.

47749842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378982 (or 378979 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The square root of 47749842 is about 6910.1260480544. The cubic root of 47749842 is about 362.7916751975.

The spelling of 47749842 in words is "forty-seven million, seven hundred forty-nine thousand, eight hundred forty-two".