938448947 has 4 divisors (see below), whose sum is σ = 938620440. Its totient is φ = 938277456.

The previous prime is 938448937. The next prime is 938448989. The reversal of 938448947 is 749844839.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 749844839 = 619 ⋅1211381.

It is a cyclic number.

It is not a de Polignac number, because 938448947 - 2¹² = 938444851 is a prime.

It is a super-2 number, since 2×938448947² = 1761372852250817618, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 938448892 and 938448901.

It is not an unprimeable number, because it can be changed into a prime (938448937) 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, 77258 + ... + 88575.

It is an arithmetic number, because the mean of its divisors is an integer number (234655110).

Almost surely, 2^938448947 is an apocalyptic number.

938448947 is a deficient number, since it is larger than the sum of its proper divisors (171493).

938448947 is a wasteful number, since it uses less digits than its factorization.

938448947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171492.

The product of its digits is 6967296, while the sum is 56.

The square root of 938448947 is about 30634.1141050300. The cubic root of 938448947 is about 979.0470213281.

The spelling of 938448947 in words is "nine hundred thirty-eight million, four hundred forty-eight thousand, nine hundred forty-seven".