989655622 has 24 divisors (see below), whose sum is σ = 1602737640. Its totient is φ = 456776640.

The previous prime is 989655577. The next prime is 989655739. The reversal of 989655622 is 226556989.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 989655622.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1241328 + ... + 1242124.

It is an arithmetic number, because the mean of its divisors is an integer number (66780735).

Almost surely, 2^989655622 is an apocalyptic number.

989655622 is a deficient number, since it is larger than the sum of its proper divisors (613082018).

989655622 is an equidigital number, since it uses as much as digits as its factorization.

989655622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1656 (or 859 counting only the distinct ones).

The product of its digits is 2332800, while the sum is 52.

The square root of 989655622 is about 31458.7924434489. The cubic root of 989655622 is about 996.5399156244.

The spelling of 989655622 in words is "nine hundred eighty-nine million, six hundred fifty-five thousand, six hundred twenty-two".