990879511 has 8 divisors (see below), whose sum is σ = 1026015120. Its totient is φ = 955808448.

The previous prime is 990879509. The next prime is 990879517. The reversal of 990879511 is 115978099.

It is a happy number.

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

It is not a de Polignac number, because 990879511 - 2¹ = 990879509 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 (990879517) 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, 16240 + ... + 47386.

It is an arithmetic number, because the mean of its divisors is an integer number (128251890).

Almost surely, 2^990879511 is an apocalyptic number.

990879511 is a deficient number, since it is larger than the sum of its proper divisors (35135609).

990879511 is a wasteful number, since it uses less digits than its factorization.

990879511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32273.

The product of its (nonzero) digits is 204120, while the sum is 49.

The square root of 990879511 is about 31478.2386896090. The cubic root of 990879511 is about 996.9505472906.

The spelling of 990879511 in words is "nine hundred ninety million, eight hundred seventy-nine thousand, five hundred eleven".