386992849 has 8 divisors (see below), whose sum is σ = 404467560. Its totient is φ = 369793536.

The previous prime is 386992847. The next prime is 386992861. The reversal of 386992849 is 948299683.

It can be written as a sum of positive squares in 4 ways, for example, as 91393600 + 295599249 = 9560^2 + 17193^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 386992849 - 2¹ = 386992847 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 386992793 and 386992802.

It is not an unprimeable number, because it can be changed into a prime (386992847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65974 + ... + 71599.

It is an arithmetic number, because the mean of its divisors is an integer number (50558445).

Almost surely, 2^386992849 is an apocalyptic number.

It is an amenable number.

386992849 is a deficient number, since it is larger than the sum of its proper divisors (17474711).

386992849 is a wasteful number, since it uses less digits than its factorization.

386992849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137699.

The product of its digits is 6718464, while the sum is 58.

The square root of 386992849 is about 19672.1338191870. The cubic root of 386992849 is about 728.7316745468.

The spelling of 386992849 in words is "three hundred eighty-six million, nine hundred ninety-two thousand, eight hundred forty-nine".