40940457 has 4 divisors (see below), whose sum is σ = 54587280. Its totient is φ = 27293636.

The previous prime is 40940443. The next prime is 40940519. The reversal of 40940457 is 75404904.

It is a happy number.

40940457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40940457 - 2¹¹ = 40938409 is a prime.

It is a super-2 number, since 2×40940457² = 3352242038737698, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40940657) 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 3 ways as a sum of consecutive naturals, for example, 6823407 + ... + 6823412.

It is an arithmetic number, because the mean of its divisors is an integer number (13646820).

Almost surely, 2^40940457 is an apocalyptic number.

It is an amenable number.

40940457 is a deficient number, since it is larger than the sum of its proper divisors (13646823).

40940457 is a wasteful number, since it uses less digits than its factorization.

40940457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13646822.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 40940457 is about 6398.4730209637. The cubic root of 40940457 is about 344.6547186145.

The spelling of 40940457 in words is "forty million, nine hundred forty thousand, four hundred fifty-seven".