989247623 has 24 divisors (see below), whose sum is σ = 1282034880. Its totient is φ = 755697600.

The previous prime is 989247619. The next prime is 989247671. The reversal of 989247623 is 326742989.

It is not a de Polignac number, because 989247623 - 2² = 989247619 is a prime.

It is a super-2 number, since 2×989247623² = 1957221719222300258, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989247683) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8303 + ... + 45248.

It is an arithmetic number, because the mean of its divisors is an integer number (53418120).

Almost surely, 2^989247623 is an apocalyptic number.

989247623 is a deficient number, since it is larger than the sum of its proper divisors (292787257).

989247623 is a wasteful number, since it uses less digits than its factorization.

989247623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53607 (or 53600 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 50.

The square root of 989247623 is about 31452.3071172847. The cubic root of 989247623 is about 996.4029510862.

The spelling of 989247623 in words is "nine hundred eighty-nine million, two hundred forty-seven thousand, six hundred twenty-three".