40198406 has 8 divisors (see below), whose sum is σ = 60324744. Its totient is φ = 20090160.

The previous prime is 40198397. The next prime is 40198447. The reversal of 40198406 is 60489104.

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

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, 5306 + ... + 10418.

It is an arithmetic number, because the mean of its divisors is an integer number (7540593).

Almost surely, 2^40198406 is an apocalyptic number.

40198406 is a deficient number, since it is larger than the sum of its proper divisors (20126338).

40198406 is a wasteful number, since it uses less digits than its factorization.

40198406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9046.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 40198406 is about 6340.2212895135. The cubic root of 40198406 is about 342.5597061450.

It can be divided in two parts, 40198 and 406, that added together give a palindrome (40604).

The spelling of 40198406 in words is "forty million, one hundred ninety-eight thousand, four hundred six".