97430987 has 4 divisors (see below), whose sum is σ = 97685760. Its totient is φ = 97176216.

The previous prime is 97430947. The next prime is 97431001. The reversal of 97430987 is 78903479.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78903479 = 823 ⋅95873.

It is a cyclic number.

It is not a de Polignac number, because 97430987 - 2¹² = 97426891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97430947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126812 + ... + 127577.

It is an arithmetic number, because the mean of its divisors is an integer number (24421440).

Almost surely, 2^97430987 is an apocalyptic number.

97430987 is a deficient number, since it is larger than the sum of its proper divisors (254773).

97430987 is a wasteful number, since it uses less digits than its factorization.

97430987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254772.

The product of its (nonzero) digits is 381024, while the sum is 47.

The square root of 97430987 is about 9870.7136013563. The cubic root of 97430987 is about 460.1495843077.

The spelling of 97430987 in words is "ninety-seven million, four hundred thirty thousand, nine hundred eighty-seven".