40408986 has 8 divisors (see below), whose sum is σ = 80817984. Its totient is φ = 13469660.

The previous prime is 40408981. The next prime is 40408993. The reversal of 40408986 is 68980404.

40408986 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

40408986 is an admirable number.

It is a super-2 number, since 2×40408986² = 3265772299096392, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40408981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3367410 + ... + 3367421.

It is an arithmetic number, because the mean of its divisors is an integer number (10102248).

Almost surely, 2^40408986 is an apocalyptic number.

40408986 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.

40408986 is a wasteful number, since it uses less digits than its factorization.

40408986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6734836.

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 40408986 is about 6356.8062735937. The cubic root of 40408986 is about 343.1568328568.

The spelling of 40408986 in words is "forty million, four hundred eight thousand, nine hundred eighty-six".