40217404 has 12 divisors (see below), whose sum is σ = 70525000. Its totient is φ = 20067408.

The previous prime is 40217377. The next prime is 40217449. The reversal of 40217404 is 40471204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8079 + ... + 12070.

Almost surely, 2^40217404 is an apocalyptic number.

It is an amenable number.

40217404 is a deficient number, since it is larger than the sum of its proper divisors (30307596).

40217404 is a wasteful number, since it uses less digits than its factorization.

40217404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20652 (or 20650 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 22.

The square root of 40217404 is about 6341.7193252303. The cubic root of 40217404 is about 342.6136628810.

Adding to 40217404 its reverse (40471204), we get a palindrome (80688608).

The spelling of 40217404 in words is "forty million, two hundred seventeen thousand, four hundred four".