939383849 has 4 divisors (see below), whose sum is σ = 941422020. Its totient is φ = 937345680.

The previous prime is 939383813. The next prime is 939383867. The reversal of 939383849 is 948383939.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 948383939 = 23747 ⋅39937.

It can be written as a sum of positive squares in 2 ways, for example, as 663989824 + 275394025 = 25768^2 + 16595^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-939383849 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 939383794 and 939383803.

It is not an unprimeable number, because it can be changed into a prime (939383869) 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, 1018394 + ... + 1019315.

It is an arithmetic number, because the mean of its divisors is an integer number (235355505).

Almost surely, 2^939383849 is an apocalyptic number.

It is an amenable number.

939383849 is a deficient number, since it is larger than the sum of its proper divisors (2038171).

939383849 is a wasteful number, since it uses less digits than its factorization.

939383849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2038170.

The product of its digits is 5038848, while the sum is 56.

The square root of 939383849 is about 30649.3694714916. The cubic root of 939383849 is about 979.3720289691.

The spelling of 939383849 in words is "nine hundred thirty-nine million, three hundred eighty-three thousand, eight hundred forty-nine".