839699145 has 24 divisors (see below), whose sum is σ = 1457521416. Its totient is φ = 447211008.

The previous prime is 839699101. The next prime is 839699149. The reversal of 839699145 is 541996938.

It can be written as a sum of positive squares in 4 ways, for example, as 84713616 + 754985529 = 9204^2 + 27477^2 .

It is not a de Polignac number, because 839699145 - 2⁷ = 839699017 is a prime.

It is a super-2 number, since 2×839699145² = 1410189308227462050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 839699091 and 839699100.

It is not an unprimeable number, because it can be changed into a prime (839699149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20257 + ... + 45713.

It is an arithmetic number, because the mean of its divisors is an integer number (60730059).

Almost surely, 2^839699145 is an apocalyptic number.

It is an amenable number.

839699145 is a deficient number, since it is larger than the sum of its proper divisors (617822271).

839699145 is a wasteful number, since it uses less digits than its factorization.

839699145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26201 (or 26198 counting only the distinct ones).

The product of its digits is 2099520, while the sum is 54.

The square root of 839699145 is about 28977.5627857141. The cubic root of 839699145 is about 943.4261364358.

The spelling of 839699145 in words is "eight hundred thirty-nine million, six hundred ninety-nine thousand, one hundred forty-five".