838961609 has 8 divisors (see below), whose sum is σ = 870860928. Its totient is φ = 807647760.

The previous prime is 838961603. The next prime is 838961623. The reversal of 838961609 is 906169838.

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 838961609 - 2⁸ = 838961353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (838961603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143447 + ... + 149180.

It is an arithmetic number, because the mean of its divisors is an integer number (108857616).

Almost surely, 2^838961609 is an apocalyptic number.

It is an amenable number.

838961609 is a deficient number, since it is larger than the sum of its proper divisors (31899319).

838961609 is a wasteful number, since it uses less digits than its factorization.

838961609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292735.

The product of its (nonzero) digits is 559872, while the sum is 50.

The square root of 838961609 is about 28964.8340060840. The cubic root of 838961609 is about 943.1498412251.

The spelling of 838961609 in words is "eight hundred thirty-eight million, nine hundred sixty-one thousand, six hundred nine".