9953943929 has 2 divisors, whose sum is σ = 9953943930. Its totient is φ = 9953943928.

The previous prime is 9953943899. The next prime is 9953943941. The reversal of 9953943929 is 9293493599.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8843521600 + 1110422329 = 94040^2 + 33323^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9953943929 is a prime.

It is not a weakly prime, because it can be changed into another prime (9953943829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4976971964 + 4976971965.

It is an arithmetic number, because the mean of its divisors is an integer number (4976971965).

Almost surely, 2^9953943929 is an apocalyptic number.

It is an amenable number.

9953943929 is a deficient number, since it is larger than the sum of its proper divisors (1).

9953943929 is an equidigital number, since it uses as much as digits as its factorization.

9953943929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21257640, while the sum is 62.

The square root of 9953943929 is about 99769.4538874499. The cubic root of 9953943929 is about 2151.1221060934.

The spelling of 9953943929 in words is "nine billion, nine hundred fifty-three million, nine hundred forty-three thousand, nine hundred twenty-nine".