40015930 has 8 divisors (see below), whose sum is σ = 72028692. Its totient is φ = 16006368.

The previous prime is 40015903. The next prime is 40015961. The reversal of 40015930 is 3951004.

It can be written as a sum of positive squares in 2 ways, for example, as 34939921 + 5076009 = 5911^2 + 2253^2 .

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

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, 2000787 + ... + 2000806.

Almost surely, 2^40015930 is an apocalyptic number.

40015930 is a deficient number, since it is larger than the sum of its proper divisors (32012762).

40015930 is a wasteful number, since it uses less digits than its factorization.

40015930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4001600.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 40015930 is about 6325.8145720532. The cubic root of 40015930 is about 342.0405831712.

Adding to 40015930 its reverse (3951004), we get a palindrome (43966934).

The spelling of 40015930 in words is "forty million, fifteen thousand, nine hundred thirty".