97809280441 has 4 divisors (see below), whose sum is σ = 97832412900. Its totient is φ = 97786147984.

The previous prime is 97809280433. The next prime is 97809280451. The reversal of 97809280441 is 14408290879.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14408290879 = 37 ⋅389413267.

It can be written as a sum of positive squares in 2 ways, for example, as 58196737600 + 39612542841 = 241240^2 + 199029^2 .

It is a cyclic number.

It is not a de Polignac number, because 97809280441 - 2³ = 97809280433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97809280451) 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, 11559886 + ... + 11568343.

It is an arithmetic number, because the mean of its divisors is an integer number (24458103225).

Almost surely, 2^97809280441 is an apocalyptic number.

It is an amenable number.

97809280441 is a deficient number, since it is larger than the sum of its proper divisors (23132459).

97809280441 is a wasteful number, since it uses less digits than its factorization.

97809280441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23132458.

The product of its (nonzero) digits is 1161216, while the sum is 52.

The spelling of 97809280441 in words is "ninety-seven billion, eight hundred nine million, two hundred eighty thousand, four hundred forty-one".