987234305 has 4 divisors (see below), whose sum is σ = 1184681172. Its totient is φ = 789787440.

The previous prime is 987234299. The next prime is 987234337. The reversal of 987234305 is 503432789.

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

It can be written as a sum of positive squares in 2 ways, for example, as 173159281 + 814075024 = 13159^2 + 28532^2 .

It is not a de Polignac number, because 987234305 - 2⁴ = 987234289 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98723426 + ... + 98723435.

It is an arithmetic number, because the mean of its divisors is an integer number (296170293).

It is a Proth number, since it is equal to 1883 ⋅ 2¹⁹ + 1 and 1883 < 2¹⁹.

Almost surely, 2^987234305 is an apocalyptic number.

It is an amenable number.

987234305 is a deficient number, since it is larger than the sum of its proper divisors (197446867).

987234305 is a wasteful number, since it uses less digits than its factorization.

987234305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197446866.

The product of its (nonzero) digits is 181440, while the sum is 41.

The square root of 987234305 is about 31420.2849286890. The cubic root of 987234305 is about 995.7265318178.

The spelling of 987234305 in words is "nine hundred eighty-seven million, two hundred thirty-four thousand, three hundred five".