97218469 has 4 divisors (see below), whose sum is σ = 100570860. Its totient is φ = 93866080.

The previous prime is 97218463. The next prime is 97218509. The reversal of 97218469 is 96481279.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96481279 = 193 ⋅499903.

It can be written as a sum of positive squares in 2 ways, for example, as 34222500 + 62995969 = 5850^2 + 7937^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97218469 is a prime.

It is a super-2 number, since 2×97218469² = 18902861429407922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97218463) 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, 1676152 + ... + 1676209.

It is an arithmetic number, because the mean of its divisors is an integer number (25142715).

Almost surely, 2^97218469 is an apocalyptic number.

It is an amenable number.

97218469 is a deficient number, since it is larger than the sum of its proper divisors (3352391).

97218469 is a wasteful number, since it uses less digits than its factorization.

97218469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3352390.

The product of its digits is 217728, while the sum is 46.

The square root of 97218469 is about 9859.9426468920. The cubic root of 97218469 is about 459.8147789271.

The spelling of 97218469 in words is "ninety-seven million, two hundred eighteen thousand, four hundred sixty-nine".