40293217 has 4 divisors (see below), whose sum is σ = 42045120. Its totient is φ = 38541316.

The previous prime is 40293191. The next prime is 40293221. The reversal of 40293217 is 71239204.

40293217 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 40293217 - 2⁷ = 40293089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40293277) 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, 875917 + ... + 875962.

It is an arithmetic number, because the mean of its divisors is an integer number (10511280).

Almost surely, 2^40293217 is an apocalyptic number.

It is an amenable number.

40293217 is a deficient number, since it is larger than the sum of its proper divisors (1751903).

40293217 is a wasteful number, since it uses less digits than its factorization.

40293217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1751902.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 40293217 is about 6347.6938331964. The cubic root of 40293217 is about 342.8288123995.

The spelling of 40293217 in words is "forty million, two hundred ninety-three thousand, two hundred seventeen".