839145929 has 2 divisors, whose sum is σ = 839145930. Its totient is φ = 839145928.

The previous prime is 839145911. The next prime is 839145941. The reversal of 839145929 is 929541938.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 569299600 + 269846329 = 23860^2 + 16427^2 .

It is a cyclic number.

It is not a de Polignac number, because 839145929 - 2¹⁶ = 839080393 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (839145029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 419572964 + 419572965.

It is an arithmetic number, because the mean of its divisors is an integer number (419572965).

Almost surely, 2^839145929 is an apocalyptic number.

It is an amenable number.

839145929 is a deficient number, since it is larger than the sum of its proper divisors (1).

839145929 is an equidigital number, since it uses as much as digits as its factorization.

839145929 is an evil number, because the sum of its binary digits is even.

The product of its digits is 699840, while the sum is 50.

The square root of 839145929 is about 28968.0156206807. The cubic root of 839145929 is about 943.2189062246.

The spelling of 839145929 in words is "eight hundred thirty-nine million, one hundred forty-five thousand, nine hundred twenty-nine".