862649489 has 8 divisors (see below), whose sum is σ = 930142080. Its totient is φ = 795319056.

The previous prime is 862649423. The next prime is 862649507. The reversal of 862649489 is 984946268.

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 862649489 - 2¹² = 862645393 is a prime.

It is a super-2 number, since 2×862649489² = 1488328281743922242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (862349489) 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 7 ways as a sum of consecutive naturals, for example, 29369 + ... + 50870.

It is an arithmetic number, because the mean of its divisors is an integer number (116267760).

Almost surely, 2^862649489 is an apocalyptic number.

It is an amenable number.

862649489 is a deficient number, since it is larger than the sum of its proper divisors (67492591).

862649489 is a wasteful number, since it uses less digits than its factorization.

862649489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81079.

The product of its digits is 5971968, while the sum is 56.

The square root of 862649489 is about 29370.8952706587. The cubic root of 862649489 is about 951.9441217968.

The spelling of 862649489 in words is "eight hundred sixty-two million, six hundred forty-nine thousand, four hundred eighty-nine".