97489724149 has 4 divisors (see below), whose sum is σ = 98110677964. Its totient is φ = 96868770336.

The previous prime is 97489724081. The next prime is 97489724153. The reversal of 97489724149 is 94142798479.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94142798479 = 134359 ⋅700681.

It can be written as a sum of positive squares in 2 ways, for example, as 49914262225 + 47575461924 = 223415^2 + 218118^2 .

It is a cyclic number.

It is not a de Polignac number, because 97489724149 - 2⁷ = 97489724021 is a prime.

It is a super-2 number, since 2×97489724149² (a number of 23 digits) 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 (97489725149) 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, 310476672 + ... + 310476985.

It is an arithmetic number, because the mean of its divisors is an integer number (24527669491).

Almost surely, 2^97489724149 is an apocalyptic number.

It is an amenable number.

97489724149 is a deficient number, since it is larger than the sum of its proper divisors (620953815).

97489724149 is a wasteful number, since it uses less digits than its factorization.

97489724149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620953814.

The product of its digits is 36578304, while the sum is 64.

The spelling of 97489724149 in words is "ninety-seven billion, four hundred eighty-nine million, seven hundred twenty-four thousand, one hundred forty-nine".