9998877 has 8 divisors (see below), whose sum is σ = 15236416.
Its totient is φ = 5713632.
The previous prime is 9998867. The next prime is 9998887. The reversal of 9998877 is 7788999.
It is a happy number.
It is an interprime number because it is at equal distance from previous prime (9998867) and next prime (9998887).
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 9998877 - 24 = 9998861 is a prime.
It is a super-2 number, since 2×99988772 = 199955082522258, which contains 22 as substring.
It is a Duffinian number.
It is a nialpdrome in base 10.
It is a zygodrome in base 10.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (9998867) 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, 238048 + ... + 238089.
It is an arithmetic number, because the mean of its divisors is an integer number (1904552).
Almost surely, 29998877 is an apocalyptic number.
It is an amenable number.
9998877 is a deficient number, since it is larger than the sum of its proper divisors (5237539).
9998877 is a wasteful number, since it uses less digits than its factorization.
9998877 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 476147.
The product of its digits is 2286144, while the sum is 57.
The square root of 9998877 is about 3162.1000932924.
The cubic root of 9998877 is about 215.4354039341.
The spelling of 9998877 in words is "nine million, nine hundred ninety-eight thousand, eight hundred seventy-seven".