9945437407 has 2 divisors, whose sum is σ = 9945437408. Its totient is φ = 9945437406.

The previous prime is 9945437389. The next prime is 9945437417. The reversal of 9945437407 is 7047345499.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9945437407 - 2⁷ = 9945437279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9945437417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4972718703 + 4972718704.

It is an arithmetic number, because the mean of its divisors is an integer number (4972718704).

Almost surely, 2^9945437407 is an apocalyptic number.

9945437407 is a deficient number, since it is larger than the sum of its proper divisors (1).

9945437407 is an equidigital number, since it uses as much as digits as its factorization.

9945437407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3810240, while the sum is 52.

The square root of 9945437407 is about 99726.8138817239. The cubic root of 9945437407 is about 2150.5091570048.

The spelling of 9945437407 in words is "nine billion, nine hundred forty-five million, four hundred thirty-seven thousand, four hundred seven".