989390485 has 8 divisors (see below), whose sum is σ = 1209670200. Its totient is φ = 776577984.

The previous prime is 989390449. The next prime is 989390503. The reversal of 989390485 is 584093989.

It can be written as a sum of positive squares in 4 ways, for example, as 490046769 + 499343716 = 22137^2 + 22346^2 .

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 989390485 - 2¹³ = 989382293 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1866510 + ... + 1867039.

It is an arithmetic number, because the mean of its divisors is an integer number (151208775).

Almost surely, 2^989390485 is an apocalyptic number.

It is an amenable number.

989390485 is a deficient number, since it is larger than the sum of its proper divisors (220279715).

989390485 is a wasteful number, since it uses less digits than its factorization.

989390485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3733607.

The product of its (nonzero) digits is 2799360, while the sum is 55.

The square root of 989390485 is about 31454.5781246546. The cubic root of 989390485 is about 996.4509138892.

It can be divided in two parts, 9893904 and 85, that added together give a palindrome (9893989).

The spelling of 989390485 in words is "nine hundred eighty-nine million, three hundred ninety thousand, four hundred eighty-five".