97147949 has 4 divisors (see below), whose sum is σ = 97684860. Its totient is φ = 96611040.

The previous prime is 97147873. The next prime is 97147997. The reversal of 97147949 is 94974179.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94974179 = 19 ⋅4998641.

It can be written as a sum of positive squares in 2 ways, for example, as 18062500 + 79085449 = 4250^2 + 8893^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97147949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 97147897 and 97147906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97147049) 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, 268184 + ... + 268545.

It is an arithmetic number, because the mean of its divisors is an integer number (24421215).

Almost surely, 2^97147949 is an apocalyptic number.

It is an amenable number.

97147949 is a deficient number, since it is larger than the sum of its proper divisors (536911).

97147949 is a wasteful number, since it uses less digits than its factorization.

97147949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536910.

The product of its digits is 571536, while the sum is 50.

The square root of 97147949 is about 9856.3659124446. The cubic root of 97147949 is about 459.7035724108.

The spelling of 97147949 in words is "ninety-seven million, one hundred forty-seven thousand, nine hundred forty-nine".