987229281 has 8 divisors (see below), whose sum is σ = 1361695680. Its totient is φ = 635457872.

The previous prime is 987229273. The next prime is 987229289. The reversal of 987229281 is 182922789.

It is an interprime number because it is at equal distance from previous prime (987229273) and next prime (987229289).

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

It is a cyclic number.

It is not a de Polignac number, because 987229281 - 2³ = 987229273 is a prime.

It is a super-2 number, since 2×987229281² = 1949243306527553922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 987229281.

It is not an unprimeable number, because it can be changed into a prime (987229289) 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, 5673645 + ... + 5673818.

It is an arithmetic number, because the mean of its divisors is an integer number (170211960).

Almost surely, 2^987229281 is an apocalyptic number.

It is an amenable number.

987229281 is a deficient number, since it is larger than the sum of its proper divisors (374466399).

987229281 is a wasteful number, since it uses less digits than its factorization.

987229281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11347495.

The product of its digits is 290304, while the sum is 48.

The square root of 987229281 is about 31420.2049802352. The cubic root of 987229281 is about 995.7248427427.

The spelling of 987229281 in words is "nine hundred eighty-seven million, two hundred twenty-nine thousand, two hundred eighty-one".