40556398 has 8 divisors (see below), whose sum is σ = 60862392. Its totient is φ = 20268936.

The previous prime is 40556381. The next prime is 40556419. The reversal of 40556398 is 89365504.

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

It is a self number, because there is not a number n which added to its sum of digits gives 40556398.

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, 4236 + ... + 9952.

It is an arithmetic number, because the mean of its divisors is an integer number (7607799).

Almost surely, 2^40556398 is an apocalyptic number.

40556398 is a deficient number, since it is larger than the sum of its proper divisors (20305994).

40556398 is a wasteful number, since it uses less digits than its factorization.

40556398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9266.

The product of its (nonzero) digits is 129600, while the sum is 40.

The square root of 40556398 is about 6368.3905345071. The cubic root of 40556398 is about 343.5736052343.

The spelling of 40556398 in words is "forty million, five hundred fifty-six thousand, three hundred ninety-eight".