5385778939 has 4 divisors (see below), whose sum is σ = 5511029656. Its totient is φ = 5260528224.

The previous prime is 5385778921. The next prime is 5385779023. The reversal of 5385778939 is 9398775835.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5385778939 - 2⁵ = 5385778907 is a prime.

It is a super-2 number, since 2×5385778939² = 58013229559551931442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5388778939) 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, 62625294 + ... + 62625379.

It is an arithmetic number, because the mean of its divisors is an integer number (1377757414).

Almost surely, 2^5385778939 is an apocalyptic number.

5385778939 is a deficient number, since it is larger than the sum of its proper divisors (125250717).

5385778939 is a wasteful number, since it uses less digits than its factorization.

5385778939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125250716.

The product of its digits is 57153600, while the sum is 64.

The square root of 5385778939 is about 73387.8664289949. The cubic root of 5385778939 is about 1752.8691914034.

The spelling of 5385778939 in words is "five billion, three hundred eighty-five million, seven hundred seventy-eight thousand, nine hundred thirty-nine".