47938519 has 4 divisors (see below), whose sum is σ = 48225744. Its totient is φ = 47651296.

The previous prime is 47938511. The next prime is 47938523. The reversal of 47938519 is 91583974.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91583974 = 2 ⋅45791987.

It is a cyclic number.

It is not a de Polignac number, because 47938519 - 2³ = 47938511 is a prime.

It is a super-2 number, since 2×47938519² = 4596203207826722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47938511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143362 + ... + 143695.

It is an arithmetic number, because the mean of its divisors is an integer number (12056436).

Almost surely, 2^47938519 is an apocalyptic number.

47938519 is a deficient number, since it is larger than the sum of its proper divisors (287225).

47938519 is a wasteful number, since it uses less digits than its factorization.

47938519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287224.

The product of its digits is 272160, while the sum is 46.

The square root of 47938519 is about 6923.7647995870. The cubic root of 47938519 is about 363.2688878394.

The spelling of 47938519 in words is "forty-seven million, nine hundred thirty-eight thousand, five hundred nineteen".