9723397 has 2 divisors, whose sum is σ = 9723398. Its totient is φ = 9723396.

The previous prime is 9723391. The next prime is 9723401. The reversal of 9723397 is 7933279.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9541921 + 181476 = 3089^2 + 426^2 .

It is a cyclic number.

It is not a de Polignac number, because 9723397 - 2¹⁹ = 9199109 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9723391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4861698 + 4861699.

It is an arithmetic number, because the mean of its divisors is an integer number (4861699).

Almost surely, 2^9723397 is an apocalyptic number.

It is an amenable number.

9723397 is a deficient number, since it is larger than the sum of its proper divisors (1).

9723397 is an equidigital number, since it uses as much as digits as its factorization.

9723397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 71442, while the sum is 40.

The square root of 9723397 is about 3118.2362001619. The cubic root of 9723397 is about 213.4384570333.

It can be divided in two parts, 9723 and 397, that multiplied together give a triangular number (3860031 = T₂₇₇₈).

The spelling of 9723397 in words is "nine million, seven hundred twenty-three thousand, three hundred ninety-seven".