849736389 has 8 divisors (see below), whose sum is σ = 1133757952. Its totient is φ = 566102880.

The previous prime is 849736387. The next prime is 849736399. The reversal of 849736389 is 983637948.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 849736389 - 2¹ = 849736387 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 (849736387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91864 + ... + 100689.

It is an arithmetic number, because the mean of its divisors is an integer number (141719744).

Almost surely, 2^849736389 is an apocalyptic number.

It is an amenable number.

849736389 is a deficient number, since it is larger than the sum of its proper divisors (284021563).

849736389 is a wasteful number, since it uses less digits than its factorization.

849736389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194027.

The product of its digits is 7838208, while the sum is 57.

The square root of 849736389 is about 29150.2382323027. The cubic root of 849736389 is about 947.1703014424.

The spelling of 849736389 in words is "eight hundred forty-nine million, seven hundred thirty-six thousand, three hundred eighty-nine".