10111949 has 2 divisors, whose sum is σ = 10111950. Its totient is φ = 10111948.

The previous prime is 10111939. The next prime is 10111993. The reversal of 10111949 is 94911101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6853924 + 3258025 = 2618^2 + 1805^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10111949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10111939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5055974 + 5055975.

It is an arithmetic number, because the mean of its divisors is an integer number (5055975).

Almost surely, 2^10111949 is an apocalyptic number.

It is an amenable number.

10111949 is a deficient number, since it is larger than the sum of its proper divisors (1).

10111949 is an equidigital number, since it uses as much as digits as its factorization.

10111949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 26.

The square root of 10111949 is about 3179.9290872597. The cubic root of 10111949 is about 216.2444434849.

The spelling of 10111949 in words is "ten million, one hundred eleven thousand, nine hundred forty-nine".