987920297 has 16 divisors (see below), whose sum is σ = 1245562752. Its totient is φ = 762583680.

The previous prime is 987920279. The next prime is 987920299. The reversal of 987920297 is 792029789.

It is a cyclic number.

It is not a de Polignac number, because 987920297 - 2¹² = 987916201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (987920299) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128663 + ... + 136124.

It is an arithmetic number, because the mean of its divisors is an integer number (77847672).

Almost surely, 2^987920297 is an apocalyptic number.

It is an amenable number.

987920297 is a deficient number, since it is larger than the sum of its proper divisors (257642455).

987920297 is a wasteful number, since it uses less digits than its factorization.

987920297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264848.

The product of its (nonzero) digits is 1143072, while the sum is 53.

The square root of 987920297 is about 31431.1994203212. The cubic root of 987920297 is about 995.9571093959.

The spelling of 987920297 in words is "nine hundred eighty-seven million, nine hundred twenty thousand, two hundred ninety-seven".