989892730 has 16 divisors (see below), whose sum is σ = 1787433480. Its totient is φ = 394706752.

The previous prime is 989892719. The next prime is 989892749. The reversal of 989892730 is 37298989.

It can be written as a sum of positive squares in 4 ways, for example, as 294568569 + 695324161 = 17163^2 + 26369^2 .

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, 152965 + ... + 159304.

Almost surely, 2^989892730 is an apocalyptic number.

989892730 is a deficient number, since it is larger than the sum of its proper divisors (797540750).

989892730 is a wasteful number, since it uses less digits than its factorization.

989892730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312593.

The product of its (nonzero) digits is 1959552, while the sum is 55.

The square root of 989892730 is about 31462.5607667272. The cubic root of 989892730 is about 996.6194950636.

The spelling of 989892730 in words is "nine hundred eighty-nine million, eight hundred ninety-two thousand, seven hundred thirty".