948981839 has 4 divisors (see below), whose sum is σ = 1021980456. Its totient is φ = 875983224.

The previous prime is 948981829. The next prime is 948981853. The reversal of 948981839 is 938189849.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 938189849 = 23 ⋅40790863.

It is a cyclic number.

It is not a de Polignac number, because 948981839 - 2²⁰ = 947933263 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 (948981829) 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, 36499289 + ... + 36499314.

It is an arithmetic number, because the mean of its divisors is an integer number (255495114).

Almost surely, 2^948981839 is an apocalyptic number.

948981839 is a deficient number, since it is larger than the sum of its proper divisors (72998617).

948981839 is a wasteful number, since it uses less digits than its factorization.

948981839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72998616.

The product of its digits is 4478976, while the sum is 59.

The square root of 948981839 is about 30805.5488345850. The cubic root of 948981839 is about 982.6962537253.

The spelling of 948981839 in words is "nine hundred forty-eight million, nine hundred eighty-one thousand, eight hundred thirty-nine".