40216398 has 8 divisors (see below), whose sum is σ = 80432808. Its totient is φ = 13405464.

The previous prime is 40216381. The next prime is 40216399. The reversal of 40216398 is 89361204.

It is a sphenic number, since it is the product of 3 distinct primes.

40216398 is an admirable number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40216399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3351361 + ... + 3351372.

It is an arithmetic number, because the mean of its divisors is an integer number (10054101).

Almost surely, 2^40216398 is an apocalyptic number.

40216398 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40216398 is a wasteful number, since it uses less digits than its factorization.

40216398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6702738.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 40216398 is about 6341.6400087044. The cubic root of 40216398 is about 342.6108061392.

The spelling of 40216398 in words is "forty million, two hundred sixteen thousand, three hundred ninety-eight".