987421499 has 8 divisors (see below), whose sum is σ = 992519808. Its totient is φ = 982333440.

The previous prime is 987421453. The next prime is 987421529. The reversal of 987421499 is 994124789.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-987421499 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 987421499.

It is not an unprimeable number, because it can be changed into a prime (987621499) 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, 252749 + ... + 256625.

It is an arithmetic number, because the mean of its divisors is an integer number (124064976).

Almost surely, 2^987421499 is an apocalyptic number.

987421499 is a deficient number, since it is larger than the sum of its proper divisors (5098309).

987421499 is a wasteful number, since it uses less digits than its factorization.

987421499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5125.

The product of its digits is 1306368, while the sum is 53.

The square root of 987421499 is about 31423.2636592700. The cubic root of 987421499 is about 995.7894625904.

The spelling of 987421499 in words is "nine hundred eighty-seven million, four hundred twenty-one thousand, four hundred ninety-nine".