989503967 has 2 divisors, whose sum is σ = 989503968. Its totient is φ = 989503966.

The previous prime is 989503951. The next prime is 989504017. The reversal of 989503967 is 769305989.

It is a weak prime.

It is an emirp because it is prime and its reverse (769305989) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 989503967 - 2⁴ = 989503951 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (989503667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494751983 + 494751984.

It is an arithmetic number, because the mean of its divisors is an integer number (494751984).

Almost surely, 2^989503967 is an apocalyptic number.

989503967 is a deficient number, since it is larger than the sum of its proper divisors (1).

989503967 is an equidigital number, since it uses as much as digits as its factorization.

989503967 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3674160, while the sum is 56.

The square root of 989503967 is about 31456.3819756818. The cubic root of 989503967 is about 996.4890097072.

The spelling of 989503967 in words is "nine hundred eighty-nine million, five hundred three thousand, nine hundred sixty-seven".