9431404649 has 2 divisors, whose sum is σ = 9431404650. Its totient is φ = 9431404648.

The previous prime is 9431404603. The next prime is 9431404727. The reversal of 9431404649 is 9464041349.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6779875600 + 2651529049 = 82340^2 + 51493^2 .

It is a cyclic number.

It is not a de Polignac number, because 9431404649 - 2⁸ = 9431404393 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (9431404049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4715702324 + 4715702325.

It is an arithmetic number, because the mean of its divisors is an integer number (4715702325).

Almost surely, 2^9431404649 is an apocalyptic number.

It is an amenable number.

9431404649 is a deficient number, since it is larger than the sum of its proper divisors (1).

9431404649 is an equidigital number, since it uses as much as digits as its factorization.

9431404649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248, while the sum is 44.

The square root of 9431404649 is about 97115.4192134287. The cubic root of 9431404649 is about 2112.8019683597.

The spelling of 9431404649 in words is "nine billion, four hundred thirty-one million, four hundred four thousand, six hundred forty-nine".