987771422 has 8 divisors (see below), whose sum is σ = 1616353272. Its totient is φ = 448987000.

The previous prime is 987771413. The next prime is 987771427. The reversal of 987771422 is 224177789.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (987771427) 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, 22449329 + ... + 22449372.

It is an arithmetic number, because the mean of its divisors is an integer number (202044159).

Almost surely, 2^987771422 is an apocalyptic number.

987771422 is a deficient number, since it is larger than the sum of its proper divisors (628581850).

987771422 is a wasteful number, since it uses less digits than its factorization.

987771422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44898714.

The product of its digits is 395136, while the sum is 47.

The square root of 987771422 is about 31428.8310632133. The cubic root of 987771422 is about 995.9070781792.

The spelling of 987771422 in words is "nine hundred eighty-seven million, seven hundred seventy-one thousand, four hundred twenty-two".