998907629 has 2 divisors, whose sum is σ = 998907630. Its totient is φ = 998907628.

The previous prime is 998907617. The next prime is 998907631. The reversal of 998907629 is 926709899.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 800041225 + 198866404 = 28285^2 + 14102^2 .

It is a cyclic number.

It is not a de Polignac number, because 998907629 - 2⁸ = 998907373 is a prime.

Together with 998907631, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (998907659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499453814 + 499453815.

It is an arithmetic number, because the mean of its divisors is an integer number (499453815).

Almost surely, 2^998907629 is an apocalyptic number.

It is an amenable number.

998907629 is a deficient number, since it is larger than the sum of its proper divisors (1).

998907629 is an equidigital number, since it uses as much as digits as its factorization.

998907629 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4408992, while the sum is 59.

The square root of 998907629 is about 31605.4999802250. The cubic root of 998907629 is about 999.6357436668.

The spelling of 998907629 in words is "nine hundred ninety-eight million, nine hundred seven thousand, six hundred twenty-nine".