990276881 has 8 divisors (see below), whose sum is σ = 1090214400. Its totient is φ = 891991440.

The previous prime is 990276871. The next prime is 990276899. The reversal of 990276881 is 188672099.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-990276881 is a prime.

It is a super-2 number, since 2×990276881² = 1961296602086176322, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (990276811) 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, 411761 + ... + 414158.

It is an arithmetic number, because the mean of its divisors is an integer number (136276800).

Almost surely, 2^990276881 is an apocalyptic number.

It is an amenable number.

990276881 is a deficient number, since it is larger than the sum of its proper divisors (99937519).

990276881 is a wasteful number, since it uses less digits than its factorization.

990276881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 826039.

The product of its (nonzero) digits is 435456, while the sum is 50.

The square root of 990276881 is about 31468.6650654266. The cubic root of 990276881 is about 996.7483988831.

The spelling of 990276881 in words is "nine hundred ninety million, two hundred seventy-six thousand, eight hundred eighty-one".