9797731 has 2 divisors, whose sum is σ = 9797732. Its totient is φ = 9797730.

The previous prime is 9797719. The next prime is 9797771. The reversal of 9797731 is 1377979.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9797731 - 2⁵ = 9797699 is a prime.

It is a super-2 number, since 2×9797731² = 191991065496722, which contains 22 as substring.

9797731 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (9797771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4898865 + 4898866.

It is an arithmetic number, because the mean of its divisors is an integer number (4898866).

Almost surely, 2^9797731 is an apocalyptic number.

9797731 is a deficient number, since it is larger than the sum of its proper divisors (1).

9797731 is an equidigital number, since it uses as much as digits as its factorization.

9797731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 83349, while the sum is 43.

The square root of 9797731 is about 3130.1327447889. The cubic root of 9797731 is about 213.9809791811.

The spelling of 9797731 in words is "nine million, seven hundred ninety-seven thousand, seven hundred thirty-one".