987919849 has 8 divisors (see below), whose sum is σ = 1133071488. Its totient is φ = 843773280.

The previous prime is 987919817. The next prime is 987919853. The reversal of 987919849 is 948919789.

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

It is not a de Polignac number, because 987919849 - 2⁵ = 987919817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (987919859) 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, 249157 + ... + 253090.

It is an arithmetic number, because the mean of its divisors is an integer number (141633936).

Almost surely, 2^987919849 is an apocalyptic number.

It is an amenable number.

987919849 is a deficient number, since it is larger than the sum of its proper divisors (145151639).

987919849 is a wasteful number, since it uses less digits than its factorization.

987919849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502535.

The product of its digits is 11757312, while the sum is 64.

The square root of 987919849 is about 31431.1922936436. The cubic root of 987919849 is about 995.9569588477.

The spelling of 987919849 in words is "nine hundred eighty-seven million, nine hundred nineteen thousand, eight hundred forty-nine".