989121245 has 16 divisors (see below), whose sum is σ = 1382106240. Its totient is φ = 665456064.

The previous prime is 989121239. The next prime is 989121277. The reversal of 989121245 is 542121989.

It is not a de Polignac number, because 989121245 - 2⁴ = 989121229 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 264755 + ... + 268464.

It is an arithmetic number, because the mean of its divisors is an integer number (86381640).

Almost surely, 2^989121245 is an apocalyptic number.

It is an amenable number.

989121245 is a deficient number, since it is larger than the sum of its proper divisors (392984995).

989121245 is a wasteful number, since it uses less digits than its factorization.

989121245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533284.

The product of its digits is 51840, while the sum is 41.

The square root of 989121245 is about 31450.2980113067. The cubic root of 989121245 is about 996.3605185776.

The spelling of 989121245 in words is "nine hundred eighty-nine million, one hundred twenty-one thousand, two hundred forty-five".