998667049 has 2 divisors, whose sum is σ = 998667050. Its totient is φ = 998667048.

The previous prime is 998667031. The next prime is 998667067. The reversal of 998667049 is 940766899.

It is a balanced prime because it is at equal distance from previous prime (998667031) and next prime (998667067).

It can be written as a sum of positive squares in only one way, i.e., 706496400 + 292170649 = 26580^2 + 17093^2 .

It is a cyclic number.

It is not a de Polignac number, because 998667049 - 2⁵ = 998667017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 998666984 and 998667002.

It is not a weakly prime, because it can be changed into another prime (998667029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499333524 + 499333525.

It is an arithmetic number, because the mean of its divisors is an integer number (499333525).

Almost surely, 2^998667049 is an apocalyptic number.

It is an amenable number.

998667049 is a deficient number, since it is larger than the sum of its proper divisors (1).

998667049 is an equidigital number, since it uses as much as digits as its factorization.

998667049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5878656, while the sum is 58.

The square root of 998667049 is about 31601.6937678979. The cubic root of 998667049 is about 999.5554854361. Note that the first 3 decimals are identical.

The spelling of 998667049 in words is "nine hundred ninety-eight million, six hundred sixty-seven thousand, forty-nine".