83649329 has 2 divisors, whose sum is σ = 83649330. Its totient is φ = 83649328.

The previous prime is 83649271. The next prime is 83649337. The reversal of 83649329 is 92394638.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64770304 + 18879025 = 8048^2 + 4345^2 .

It is a cyclic number.

It is not a de Polignac number, because 83649329 - 2⁸ = 83649073 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 83649329.

It is not a weakly prime, because it can be changed into another prime (83649829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41824664 + 41824665.

It is an arithmetic number, because the mean of its divisors is an integer number (41824665).

Almost surely, 2^83649329 is an apocalyptic number.

It is an amenable number.

83649329 is a deficient number, since it is larger than the sum of its proper divisors (1).

83649329 is an equidigital number, since it uses as much as digits as its factorization.

83649329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 279936, while the sum is 44.

The square root of 83649329 is about 9146.0007106932. Note that the first 3 decimals coincide. The cubic root of 83649329 is about 437.3416312784.

The spelling of 83649329 in words is "eighty-three million, six hundred forty-nine thousand, three hundred twenty-nine".