987422 has 4 divisors (see below), whose sum is σ = 1481136. Its totient is φ = 493710.

The previous prime is 987391. The next prime is 987433. The reversal of 987422 is 224789.

987422 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 224789 = 19 ⋅11831.

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

987422 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 246854 + ... + 246857.

It is an arithmetic number, because the mean of its divisors is an integer number (370284).

2⁹⁸⁷⁴²² is an apocalyptic number.

987422 is a deficient number, since it is larger than the sum of its proper divisors (493714).

987422 is a wasteful number, since it uses less digits than its factorization.

987422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493713.

The product of its digits is 8064, while the sum is 32.

The square root of 987422 is about 993.6910988834. The cubic root of 987422 is about 99.5789631006.

The spelling of 987422 in words is "nine hundred eighty-seven thousand, four hundred twenty-two".