10491939 has 24 divisors (see below), whose sum is σ = 15958800. Its totient is φ = 6632640.

The previous prime is 10491917. The next prime is 10491953. The reversal of 10491939 is 93919401.

It is not a de Polignac number, because 10491939 - 2¹² = 10487843 is a prime.

It is a super-2 number, since 2×10491939² = 220161567959442, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10491989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15592 + ... + 16250.

It is an arithmetic number, because the mean of its divisors is an integer number (664950).

Almost surely, 2^10491939 is an apocalyptic number.

10491939 is a deficient number, since it is larger than the sum of its proper divisors (5466861).

10491939 is a wasteful number, since it uses less digits than its factorization.

10491939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 755 (or 752 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 36.

The square root of 10491939 is about 3239.1262710799. The cubic root of 10491939 is about 218.9199056580.

The spelling of 10491939 in words is "ten million, four hundred ninety-one thousand, nine hundred thirty-nine".