47938829 has 4 divisors (see below), whose sum is σ = 47973276. Its totient is φ = 47904384.

The previous prime is 47938823. The next prime is 47938841. The reversal of 47938829 is 92883974.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 25989604 + 21949225 = 5098^2 + 4685^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47938829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47938823) 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, 15044 + ... + 17949.

It is an arithmetic number, because the mean of its divisors is an integer number (11993319).

Almost surely, 2^47938829 is an apocalyptic number.

It is an amenable number.

47938829 is a deficient number, since it is larger than the sum of its proper divisors (34447).

47938829 is a wasteful number, since it uses less digits than its factorization.

47938829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34446.

The product of its digits is 870912, while the sum is 50.

The square root of 47938829 is about 6923.7871862154. The cubic root of 47938829 is about 363.2696708779.

The spelling of 47938829 in words is "forty-seven million, nine hundred thirty-eight thousand, eight hundred twenty-nine".