40939280 has 40 divisors (see below), whose sum is σ = 95452224. Its totient is φ = 16329600.

The previous prime is 40939273. The next prime is 40939289. The reversal of 40939280 is 8293904.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 40939280.

It is not an unprimeable number, because it can be changed into a prime (40939289) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 50075 + ... + 50885.

Almost surely, 2^40939280 is an apocalyptic number.

40939280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40939280 is an abundant number, since it is smaller than the sum of its proper divisors (54512944).

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

40939280 is a wasteful number, since it uses less digits than its factorization.

40939280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1455 (or 1449 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 40939280 is about 6398.3810452332. The cubic root of 40939280 is about 344.6514157488.

The spelling of 40939280 in words is "forty million, nine hundred thirty-nine thousand, two hundred eighty".