9423444691 has 2 divisors, whose sum is σ = 9423444692. Its totient is φ = 9423444690.

The previous prime is 9423444673. The next prime is 9423444707. The reversal of 9423444691 is 1964443249.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9423444691 - 2¹³ = 9423436499 is a prime.

It is not a weakly prime, because it can be changed into another prime (9423444601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4711722345 + 4711722346.

It is an arithmetic number, because the mean of its divisors is an integer number (4711722346).

Almost surely, 2^9423444691 is an apocalyptic number.

9423444691 is a deficient number, since it is larger than the sum of its proper divisors (1).

9423444691 is an equidigital number, since it uses as much as digits as its factorization.

9423444691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 746496, while the sum is 46.

The square root of 9423444691 is about 97074.4286153671. The cubic root of 9423444691 is about 2112.2074104580.

The spelling of 9423444691 in words is "nine billion, four hundred twenty-three million, four hundred forty-four thousand, six hundred ninety-one".