987323939 has 4 divisors (see below), whose sum is σ = 1128370224. Its totient is φ = 846277656.

The previous prime is 987323933. The next prime is 987323957. The reversal of 987323939 is 939323789.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 939323789 = 107 ⋅8778727.

It is not a de Polignac number, because 987323939 - 2¹⁶ = 987258403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (987323933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70523132 + ... + 70523145.

It is an arithmetic number, because the mean of its divisors is an integer number (282092556).

Almost surely, 2^987323939 is an apocalyptic number.

987323939 is a deficient number, since it is larger than the sum of its proper divisors (141046285).

987323939 is a wasteful number, since it uses less digits than its factorization.

987323939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141046284.

The product of its digits is 2204496, while the sum is 53.

The square root of 987323939 is about 31421.7112678479. The cubic root of 987323939 is about 995.7566659175.

The spelling of 987323939 in words is "nine hundred eighty-seven million, three hundred twenty-three thousand, nine hundred thirty-nine".