40987930 has 8 divisors (see below), whose sum is σ = 73778292. Its totient is φ = 16395168.

The previous prime is 40987907. The next prime is 40987931. The reversal of 40987930 is 3978904.

40987930 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 40972801 + 15129 = 6401^2 + 123^2 .

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

It is not an unprimeable number, because it can be changed into a prime (40987931) 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, 2049387 + ... + 2049406.

Almost surely, 2^40987930 is an apocalyptic number.

40987930 is a deficient number, since it is larger than the sum of its proper divisors (32790362).

40987930 is a wasteful number, since it uses less digits than its factorization.

40987930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4098800.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 40987930 is about 6402.1816594033. The cubic root of 40987930 is about 344.7878833335.

The spelling of 40987930 in words is "forty million, nine hundred eighty-seven thousand, nine hundred thirty".