41391649 has 12 divisors (see below), whose sum is σ = 45042156. Its totient is φ = 38019072.

The previous prime is 41391619. The next prime is 41391653. The reversal of 41391649 is 94619314.

41391649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 431649 + 40960000 = 657^2 + 6400^2 .

It is a de Polignac number, because none of the positive numbers 2^k-41391649 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (41391619) 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 in 11 ways as a sum of consecutive naturals, for example, 42957 + ... + 43909.

It is an arithmetic number, because the mean of its divisors is an integer number (3753513).

Almost surely, 2^41391649 is an apocalyptic number.

It is an amenable number.

41391649 is a deficient number, since it is larger than the sum of its proper divisors (3650507).

41391649 is a wasteful number, since it uses less digits than its factorization.

41391649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1236 (or 1223 counting only the distinct ones).

The product of its digits is 23328, while the sum is 37.

The square root of 41391649 is about 6433.6341984915. The cubic root of 41391649 is about 345.9162064453.

The spelling of 41391649 in words is "forty-one million, three hundred ninety-one thousand, six hundred forty-nine".