988505417 has 4 divisors (see below), whose sum is σ = 989657040. Its totient is φ = 987353796.

The previous prime is 988505393. The next prime is 988505429. The reversal of 988505417 is 714505889.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 714505889 = 67 ⋅10664267.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-988505417 is a prime.

It is a super-3 number, since 3×988505417³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (988505447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 574523 + ... + 576240.

It is an arithmetic number, because the mean of its divisors is an integer number (247414260).

Almost surely, 2^988505417 is an apocalyptic number.

It is an amenable number.

988505417 is a deficient number, since it is larger than the sum of its proper divisors (1151623).

988505417 is a wasteful number, since it uses less digits than its factorization.

988505417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1151622.

The product of its (nonzero) digits is 403200, while the sum is 47.

The square root of 988505417 is about 31440.5059914754. The cubic root of 988505417 is about 996.1536972560.

The spelling of 988505417 in words is "nine hundred eighty-eight million, five hundred five thousand, four hundred seventeen".