9952991 has 2 divisors, whose sum is σ = 9952992. Its totient is φ = 9952990.

The previous prime is 9952981. The next prime is 9953011. The reversal of 9952991 is 1992599.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9952991 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9952931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4976495 + 4976496.

It is an arithmetic number, because the mean of its divisors is an integer number (4976496).

Almost surely, 2^9952991 is an apocalyptic number.

9952991 is a deficient number, since it is larger than the sum of its proper divisors (1).

9952991 is an equidigital number, since it uses as much as digits as its factorization.

9952991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 65610, while the sum is 44.

The square root of 9952991 is about 3154.8361288663. The cubic root of 9952991 is about 215.1053458863.

The spelling of 9952991 in words is "nine million, nine hundred fifty-two thousand, nine hundred ninety-one".