998749607 has 8 divisors (see below), whose sum is σ = 1005960384. Its totient is φ = 991564288.

The previous prime is 998749579. The next prime is 998749639. The reversal of 998749607 is 706947899.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 998749607 - 2¹⁴ = 998733223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998749657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76178 + ... + 88320.

It is an arithmetic number, because the mean of its divisors is an integer number (125745048).

Almost surely, 2^998749607 is an apocalyptic number.

998749607 is a deficient number, since it is larger than the sum of its proper divisors (7210777).

998749607 is a wasteful number, since it uses less digits than its factorization.

998749607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12729.

The product of its (nonzero) digits is 6858432, while the sum is 59.

The square root of 998749607 is about 31602.9999683574. Note that the first 4 decimals coincide. The cubic root of 998749607 is about 999.5830284923.

The spelling of 998749607 in words is "nine hundred ninety-eight million, seven hundred forty-nine thousand, six hundred seven".