9649973 has 2 divisors, whose sum is σ = 9649974. Its totient is φ = 9649972.

The previous prime is 9649921. The next prime is 9649979. The reversal of 9649973 is 3799469.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9591409 + 58564 = 3097^2 + 242^2 .

It is an emirp because it is prime and its reverse (3799469) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9649973 - 2⁶ = 9649909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9649979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4824986 + 4824987.

It is an arithmetic number, because the mean of its divisors is an integer number (4824987).

Almost surely, 2^9649973 is an apocalyptic number.

It is an amenable number.

9649973 is a deficient number, since it is larger than the sum of its proper divisors (1).

9649973 is an equidigital number, since it uses as much as digits as its factorization.

9649973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 367416, while the sum is 47.

The square root of 9649973 is about 3106.4405675950. The cubic root of 9649973 is about 212.8998552057.

The spelling of 9649973 in words is "nine million, six hundred forty-nine thousand, nine hundred seventy-three".