97987159 has 4 divisors (see below), whose sum is σ = 98854416. Its totient is φ = 97119904.

The previous prime is 97987139. The next prime is 97987163. The reversal of 97987159 is 95178979.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 97987159 - 2¹³ = 97978967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97987139) 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, 433459 + ... + 433684.

It is an arithmetic number, because the mean of its divisors is an integer number (24713604).

Almost surely, 2^97987159 is an apocalyptic number.

97987159 is a deficient number, since it is larger than the sum of its proper divisors (867257).

97987159 is a wasteful number, since it uses less digits than its factorization.

97987159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 867256.

The product of its digits is 1428840, while the sum is 55.

The square root of 97987159 is about 9898.8463469235. The cubic root of 97987159 is about 461.0234913833.

The spelling of 97987159 in words is "ninety-seven million, nine hundred eighty-seven thousand, one hundred fifty-nine".