47818839 has 8 divisors (see below), whose sum is σ = 67114240. Its totient is φ = 30201336.

The previous prime is 47818829. The next prime is 47818843. The reversal of 47818839 is 93881874.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 47818839 - 2⁷ = 47818711 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 (47818819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 419407 + ... + 419520.

It is an arithmetic number, because the mean of its divisors is an integer number (8389280).

Almost surely, 2^47818839 is an apocalyptic number.

47818839 is a deficient number, since it is larger than the sum of its proper divisors (19295401).

47818839 is a wasteful number, since it uses less digits than its factorization.

47818839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 838949.

The product of its digits is 387072, while the sum is 48.

The square root of 47818839 is about 6915.1167018352. The cubic root of 47818839 is about 362.9663319031.

The spelling of 47818839 in words is "forty-seven million, eight hundred eighteen thousand, eight hundred thirty-nine".