987427 has 4 divisors (see below), whose sum is σ = 1128496. Its totient is φ = 846360.

The previous prime is 987391. The next prime is 987433. The reversal of 987427 is 724789.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 987427 - 2⁷ = 987299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (987457) 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, 70524 + ... + 70537.

It is an arithmetic number, because the mean of its divisors is an integer number (282124).

2⁹⁸⁷⁴²⁷ is an apocalyptic number.

987427 is a deficient number, since it is larger than the sum of its proper divisors (141069).

987427 is a wasteful number, since it uses less digits than its factorization.

987427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141068.

The product of its digits is 28224, while the sum is 37.

The square root of 987427 is about 993.6936147526. The cubic root of 987427 is about 99.5791311793.

The spelling of 987427 in words is "nine hundred eighty-seven thousand, four hundred twenty-seven".