40398086 has 8 divisors (see below), whose sum is σ = 64161720. Its totient is φ = 19010848.

The previous prime is 40398049. The next prime is 40398109. The reversal of 40398086 is 68089304.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 594056 + ... + 594123.

It is an arithmetic number, because the mean of its divisors is an integer number (8020215).

Almost surely, 2^40398086 is an apocalyptic number.

40398086 is a deficient number, since it is larger than the sum of its proper divisors (23763634).

40398086 is a wasteful number, since it uses less digits than its factorization.

40398086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1188198.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 40398086 is about 6355.9488670064. The cubic root of 40398086 is about 343.1259754806.

It can be divided in two parts, 403 and 98086, that added together give a palindrome (98489).

The spelling of 40398086 in words is "forty million, three hundred ninety-eight thousand, eighty-six".