987508398 has 16 divisors (see below), whose sum is σ = 1980098640. Its totient is φ = 328322496.

The previous prime is 987508397. The next prime is 987508463. The reversal of 987508398 is 893805789.

It is a super-2 number, since 2×987508398² = 1950345672241052808, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (987508397) 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, 209215 + ... + 213882.

It is an arithmetic number, because the mean of its divisors is an integer number (123756165).

Almost surely, 2^987508398 is an apocalyptic number.

987508398 is an abundant number, since it is smaller than the sum of its proper divisors (992590242).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

987508398 is a wasteful number, since it uses less digits than its factorization.

987508398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423491.

The product of its (nonzero) digits is 4354560, while the sum is 57.

The square root of 987508398 is about 31424.6463464587. The cubic root of 987508398 is about 995.8186735438.

The spelling of 987508398 in words is "nine hundred eighty-seven million, five hundred eight thousand, three hundred ninety-eight".