9890879 has 4 divisors (see below), whose sum is σ = 10016160. Its totient is φ = 9765600.

The previous prime is 9890873. The next prime is 9890899. The reversal of 9890879 is 9780989.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9890879 - 2⁴ = 9890863 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 (9890873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62522 + ... + 62679.

It is an arithmetic number, because the mean of its divisors is an integer number (2504040).

Almost surely, 2^9890879 is an apocalyptic number.

9890879 is a deficient number, since it is larger than the sum of its proper divisors (125281).

9890879 is a wasteful number, since it uses less digits than its factorization.

9890879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125280.

The product of its (nonzero) digits is 326592, while the sum is 50.

The square root of 9890879 is about 3144.9767884676. The cubic root of 9890879 is about 214.6569542927.

The spelling of 9890879 in words is "nine million, eight hundred ninety thousand, eight hundred seventy-nine".