40549137 has 12 divisors (see below), whose sum is σ = 54902736. Its totient is φ = 26620440.

The previous prime is 40549133. The next prime is 40549181. The reversal of 40549137 is 73194504.

40549137 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40549137 - 2² = 40549133 is a prime.

It is a super-2 number, since 2×40549137² = 3288465022889538, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40549098 and 40549107.

It is not an unprimeable number, because it can be changed into a prime (40549133) 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, 11962 + ... + 14972.

It is an arithmetic number, because the mean of its divisors is an integer number (4575228).

Almost surely, 2^40549137 is an apocalyptic number.

It is an amenable number.

40549137 is a deficient number, since it is larger than the sum of its proper divisors (14353599).

40549137 is an equidigital number, since it uses as much as digits as its factorization.

40549137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3148 (or 3081 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 40549137 is about 6367.8204277445. The cubic root of 40549137 is about 343.5531001520.

The spelling of 40549137 in words is "forty million, five hundred forty-nine thousand, one hundred thirty-seven".