40040957 has 6 divisors (see below), whose sum is σ = 44012094. Its totient is φ = 36400760.

The previous prime is 40040929. The next prime is 40040963. The reversal of 40040957 is 75904004.

It can be written as a sum of positive squares in only one way, i.e., 33860761 + 6180196 = 5819^2 + 2486^2 .

It is not a de Polignac number, because 40040957 - 2⁶ = 40040893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40040977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 165338 + ... + 165579.

It is an arithmetic number, because the mean of its divisors is an integer number (7335349).

Almost surely, 2^40040957 is an apocalyptic number.

It is an amenable number.

40040957 is a deficient number, since it is larger than the sum of its proper divisors (3971137).

40040957 is a wasteful number, since it uses less digits than its factorization.

40040957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330939 (or 330928 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 40040957 is about 6327.7924270633. The cubic root of 40040957 is about 342.1118753266. Note that the first 3 decimals are identical.

The spelling of 40040957 in words is "forty million, forty thousand, nine hundred fifty-seven".