40218867 has 24 divisors (see below), whose sum is σ = 62955984. Its totient is φ = 24594624.

The previous prime is 40218859. The next prime is 40218869. The reversal of 40218867 is 76881204.

It is not a de Polignac number, because 40218867 - 2³ = 40218859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40218869) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19248 + ... + 21234.

It is an arithmetic number, because the mean of its divisors is an integer number (2623166).

Almost surely, 2^40218867 is an apocalyptic number.

40218867 is a deficient number, since it is larger than the sum of its proper divisors (22737117).

40218867 is a wasteful number, since it uses less digits than its factorization.

40218867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2179 (or 2176 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 40218867 is about 6341.8346714496. The cubic root of 40218867 is about 342.6178172823.

The spelling of 40218867 in words is "forty million, two hundred eighteen thousand, eight hundred sixty-seven".