40283217 has 64 divisors (see below), whose sum is σ = 70076160. Its totient is φ = 22643712.

The previous prime is 40283209. The next prime is 40283263. The reversal of 40283217 is 71238204.

It is not a de Polignac number, because 40283217 - 2³ = 40283209 is a prime.

It is a super-3 number, since 3×40283217³ (a number of 24 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (40283207) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 256503 + ... + 256659.

It is an arithmetic number, because the mean of its divisors is an integer number (1094940).

Almost surely, 2^40283217 is an apocalyptic number.

It is an amenable number.

40283217 is a deficient number, since it is larger than the sum of its proper divisors (29792943).

40283217 is a wasteful number, since it uses less digits than its factorization.

40283217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239 (or 233 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 40283217 is about 6346.9060966742. The cubic root of 40283217 is about 342.8004488847.

The spelling of 40283217 in words is "forty million, two hundred eighty-three thousand, two hundred seventeen".