47495839 has 4 divisors (see below), whose sum is σ = 49995640. Its totient is φ = 44996040.

The previous prime is 47495737. The next prime is 47495843. The reversal of 47495839 is 93859474.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93859474 = 2 ⋅46929737.

It is a cyclic number.

It is not a de Polignac number, because 47495839 - 2⁷ = 47495711 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 47495792 and 47495801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47495879) 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, 1249872 + ... + 1249909.

It is an arithmetic number, because the mean of its divisors is an integer number (12498910).

Almost surely, 2^47495839 is an apocalyptic number.

47495839 is a deficient number, since it is larger than the sum of its proper divisors (2499801).

47495839 is a wasteful number, since it uses less digits than its factorization.

47495839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2499800.

The product of its digits is 1088640, while the sum is 49.

The square root of 47495839 is about 6891.7224987662. The cubic root of 47495839 is about 362.1472468549.

Subtracting 47495839 from its reverse (93859474), we obtain a triangular number (46363635 = T₉₆₂₉).

The spelling of 47495839 in words is "forty-seven million, four hundred ninety-five thousand, eight hundred thirty-nine".