989418469 has 8 divisors (see below), whose sum is σ = 1085632632. Its totient is φ = 896076480.

The previous prime is 989418467. The next prime is 989418497. The reversal of 989418469 is 964814989.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1444 + 989417025 = 38^2 + 31455^2 .

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

It is not a de Polignac number, because 989418469 - 2¹ = 989418467 is a prime.

It is a super-2 number, since 2×989418469² = 1957897813596607922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989418467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 717322 + ... + 718699.

It is an arithmetic number, because the mean of its divisors is an integer number (135704079).

Almost surely, 2^989418469 is an apocalyptic number.

It is an amenable number.

989418469 is a deficient number, since it is larger than the sum of its proper divisors (96214163).

989418469 is a wasteful number, since it uses less digits than its factorization.

989418469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1436087.

The product of its digits is 4478976, while the sum is 58.

The square root of 989418469 is about 31455.0229534172. The cubic root of 989418469 is about 996.4603083666.

The spelling of 989418469 in words is "nine hundred eighty-nine million, four hundred eighteen thousand, four hundred sixty-nine".