9949931 has 2 divisors, whose sum is σ = 9949932. Its totient is φ = 9949930.

The previous prime is 9949909. The next prime is 9949943. The reversal of 9949931 is 1399499.

It is a strong prime.

It is an emirp because it is prime and its reverse (1399499) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9949931 - 2⁶ = 9949867 is a prime.

It is a super-2 number, since 2×9949931² = 198002253809522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9949231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4974965 + 4974966.

It is an arithmetic number, because the mean of its divisors is an integer number (4974966).

Almost surely, 2^9949931 is an apocalyptic number.

9949931 is a deficient number, since it is larger than the sum of its proper divisors (1).

9949931 is an equidigital number, since it uses as much as digits as its factorization.

9949931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 78732, while the sum is 44.

The square root of 9949931 is about 3154.3511218633. The cubic root of 9949931 is about 215.0832992531.

The spelling of 9949931 in words is "nine million, nine hundred forty-nine thousand, nine hundred thirty-one".