40397416 has 8 divisors (see below), whose sum is σ = 75745170. Its totient is φ = 20198704.

The previous prime is 40397381. The next prime is 40397419. The reversal of 40397416 is 61479304.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 38564100 + 1833316 = 6210^2 + 1354^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (40397419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2524831 + ... + 2524846.

Almost surely, 2^40397416 is an apocalyptic number.

It is an amenable number.

40397416 is a deficient number, since it is larger than the sum of its proper divisors (35347754).

40397416 is a wasteful number, since it uses less digits than its factorization.

40397416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5049683 (or 5049679 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 40397416 is about 6355.8961602594. The cubic root of 40397416 is about 343.1240785617.

The spelling of 40397416 in words is "forty million, three hundred ninety-seven thousand, four hundred sixteen".