989626873 has 2 divisors, whose sum is σ = 989626874. Its totient is φ = 989626872.

The previous prime is 989626871. The next prime is 989626889. The reversal of 989626873 is 378626989.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 806105664 + 183521209 = 28392^2 + 13547^2 .

It is a cyclic number.

It is not a de Polignac number, because 989626873 - 2¹ = 989626871 is a prime.

It is a super-2 number, since 2×989626873² = 1958722695527516258, which contains 22 as substring.

Together with 989626871, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (989626871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494813436 + 494813437.

It is an arithmetic number, because the mean of its divisors is an integer number (494813437).

Almost surely, 2^989626873 is an apocalyptic number.

It is an amenable number.

989626873 is a deficient number, since it is larger than the sum of its proper divisors (1).

989626873 is an equidigital number, since it uses as much as digits as its factorization.

989626873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7838208, while the sum is 58.

The square root of 989626873 is about 31458.3355090507. The cubic root of 989626873 is about 996.5302658692.

The spelling of 989626873 in words is "nine hundred eighty-nine million, six hundred twenty-six thousand, eight hundred seventy-three".