4890661989 has 8 divisors (see below), whose sum is σ = 6523827552. Its totient is φ = 3258968880.

The previous prime is 4890661987. The next prime is 4890661991. The reversal of 4890661989 is 9891660984.

It is an interprime number because it is at equal distance from previous prime (4890661987) and next prime (4890661991).

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

It is not a de Polignac number, because 4890661989 - 2¹ = 4890661987 is a prime.

It is a super-2 number, since 2×4890661989² = 47837149381298872242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4890661981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 360339 + ... + 373664.

It is an arithmetic number, because the mean of its divisors is an integer number (815478444).

Almost surely, 2^4890661989 is an apocalyptic number.

It is an amenable number.

4890661989 is a deficient number, since it is larger than the sum of its proper divisors (1633165563).

4890661989 is a wasteful number, since it uses less digits than its factorization.

4890661989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736227.

The product of its (nonzero) digits is 6718464, while the sum is 60.

The square root of 4890661989 is about 69933.2681132521. The cubic root of 4890661989 is about 1697.4196134218.

The spelling of 4890661989 in words is "four billion, eight hundred ninety million, six hundred sixty-one thousand, nine hundred eighty-nine".