989474567 has 2 divisors, whose sum is σ = 989474568. Its totient is φ = 989474566.

The previous prime is 989474561. The next prime is 989474573. The reversal of 989474567 is 765474989.

It is a balanced prime because it is at equal distance from previous prime (989474561) and next prime (989474573).

It is an emirp because it is prime and its reverse (765474989) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-989474567 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (989474561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494737283 + 494737284.

It is an arithmetic number, because the mean of its divisors is an integer number (494737284).

Almost surely, 2^989474567 is an apocalyptic number.

989474567 is a deficient number, since it is larger than the sum of its proper divisors (1).

989474567 is an equidigital number, since it uses as much as digits as its factorization.

989474567 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15240960, while the sum is 59.

The square root of 989474567 is about 31455.9146584549. The cubic root of 989474567 is about 996.4791404299.

The spelling of 989474567 in words is "nine hundred eighty-nine million, four hundred seventy-four thousand, five hundred sixty-seven".