987113473 has 4 divisors (see below), whose sum is σ = 991046448. Its totient is φ = 983180500.

The previous prime is 987113467. The next prime is 987113503. The reversal of 987113473 is 374311789.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 374311789 = 13463 ⋅27803.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-987113473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (987113443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1966111 + ... + 1966612.

It is an arithmetic number, because the mean of its divisors is an integer number (247761612).

Almost surely, 2^987113473 is an apocalyptic number.

It is an amenable number.

987113473 is a deficient number, since it is larger than the sum of its proper divisors (3932975).

987113473 is a wasteful number, since it uses less digits than its factorization.

987113473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3932974.

The product of its digits is 127008, while the sum is 43.

The square root of 987113473 is about 31418.3620355995. The cubic root of 987113473 is about 995.6859063598.

The spelling of 987113473 in words is "nine hundred eighty-seven million, one hundred thirteen thousand, four hundred seventy-three".