47428039 has 4 divisors (see below), whose sum is σ = 47552256. Its totient is φ = 47303824.

The previous prime is 47428037. The next prime is 47428061. The reversal of 47428039 is 93082474.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 47428039 - 2¹ = 47428037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 47427989 and 47428007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47428033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61534 + ... + 62299.

It is an arithmetic number, because the mean of its divisors is an integer number (11888064).

Almost surely, 2^47428039 is an apocalyptic number.

47428039 is a deficient number, since it is larger than the sum of its proper divisors (124217).

47428039 is a wasteful number, since it uses less digits than its factorization.

47428039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124216.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 47428039 is about 6886.8017976416. The cubic root of 47428039 is about 361.9748438508.

The spelling of 47428039 in words is "forty-seven million, four hundred twenty-eight thousand, thirty-nine".