989013247 has 2 divisors, whose sum is σ = 989013248. Its totient is φ = 989013246.

The previous prime is 989013239. The next prime is 989013343. The reversal of 989013247 is 742310989.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 989013247 - 2³ = 989013239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (989013227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494506623 + 494506624.

It is an arithmetic number, because the mean of its divisors is an integer number (494506624).

Almost surely, 2^989013247 is an apocalyptic number.

989013247 is a deficient number, since it is larger than the sum of its proper divisors (1).

989013247 is an equidigital number, since it uses as much as digits as its factorization.

989013247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 989013247 is about 31448.5810013743. The cubic root of 989013247 is about 996.3242544491.

The spelling of 989013247 in words is "nine hundred eighty-nine million, thirteen thousand, two hundred forty-seven".