47389640 has 16 divisors (see below), whose sum is σ = 106626780. Its totient is φ = 18955840.

The previous prime is 47389633. The next prime is 47389649. The reversal of 47389640 is 4698374.

47389640 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 2 ways, for example, as 38663524 + 8726116 = 6218^2 + 2954^2 .

It is not an unprimeable number, because it can be changed into a prime (47389649) 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 3 ways as a sum of consecutive naturals, for example, 592331 + ... + 592410.

Almost surely, 2^47389640 is an apocalyptic number.

47389640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

47389640 is an abundant number, since it is smaller than the sum of its proper divisors (59237140).

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

47389640 is a wasteful number, since it uses less digits than its factorization.

47389640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1184752 (or 1184748 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 47389640 is about 6884.0133643101. The cubic root of 47389640 is about 361.8771293263.

The spelling of 47389640 in words is "forty-seven million, three hundred eighty-nine thousand, six hundred forty".