969829639 has 4 divisors (see below), whose sum is σ = 974426200. Its totient is φ = 965233080.

The previous prime is 969829633. The next prime is 969829649. The reversal of 969829639 is 936928969.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 936928969 = 19 ⋅49312051.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-969829639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (969829633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2297964 + ... + 2298385.

It is an arithmetic number, because the mean of its divisors is an integer number (243606550).

Almost surely, 2^969829639 is an apocalyptic number.

969829639 is a deficient number, since it is larger than the sum of its proper divisors (4596561).

969829639 is a wasteful number, since it uses less digits than its factorization.

969829639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4596560.

The product of its digits is 11337408, while the sum is 61.

The square root of 969829639 is about 31142.0879036715. The cubic root of 969829639 is about 989.8403439440.

The spelling of 969829639 in words is "nine hundred sixty-nine million, eight hundred twenty-nine thousand, six hundred thirty-nine".