998936997 has 8 divisors (see below), whose sum is σ = 1364401920. Its totient is φ = 649715040.

The previous prime is 998936993. The next prime is 998937001. The reversal of 998936997 is 799639899.

It is a happy number.

998936997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (998936993) and next prime (998937001).

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

It is not a de Polignac number, because 998936997 - 2² = 998936993 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998936993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4060597 + ... + 4060842.

It is an arithmetic number, because the mean of its divisors is an integer number (170550240).

Almost surely, 2^998936997 is an apocalyptic number.

It is an amenable number.

998936997 is a deficient number, since it is larger than the sum of its proper divisors (365464923).

998936997 is a wasteful number, since it uses less digits than its factorization.

998936997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8121483.

The product of its digits is 59521392, while the sum is 69.

The square root of 998936997 is about 31605.9645794904. The cubic root of 998936997 is about 999.6455400396.

The spelling of 998936997 in words is "nine hundred ninety-eight million, nine hundred thirty-six thousand, nine hundred ninety-seven".