40291980 has 24 divisors (see below), whose sum is σ = 112817712. Its totient is φ = 10744512.

The previous prime is 40291973. The next prime is 40291981. The reversal of 40291980 is 8919204.

40291980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nialpdrome in base 7.

It is not an unprimeable number, because it can be changed into a prime (40291981) 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 7 ways as a sum of consecutive naturals, for example, 335707 + ... + 335826.

It is an arithmetic number, because the mean of its divisors is an integer number (4700738).

Almost surely, 2^40291980 is an apocalyptic number.

It is an amenable number.

40291980 is an abundant number, since it is smaller than the sum of its proper divisors (72525732).

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

40291980 is a wasteful number, since it uses less digits than its factorization.

40291980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671545 (or 671543 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 40291980 is about 6347.5963954870. The cubic root of 40291980 is about 342.8253040871.

The spelling of 40291980 in words is "forty million, two hundred ninety-one thousand, nine hundred eighty".