40399180 has 12 divisors (see below), whose sum is σ = 84838320. Its totient is φ = 16159664.

The previous prime is 40399159. The next prime is 40399217. The reversal of 40399180 is 8199304.

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, 1009960 + ... + 1009999.

It is an arithmetic number, because the mean of its divisors is an integer number (7069860).

Almost surely, 2^40399180 is an apocalyptic number.

It is an amenable number.

40399180 is an abundant number, since it is smaller than the sum of its proper divisors (44439140).

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

40399180 is a wasteful number, since it uses less digits than its factorization.

40399180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2019968 (or 2019966 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 40399180 is about 6356.0349275315. The cubic root of 40399180 is about 343.1290727926.

The spelling of 40399180 in words is "forty million, three hundred ninety-nine thousand, one hundred eighty".