40109968 has 10 divisors (see below), whose sum is σ = 77713094. Its totient is φ = 20054976.

The previous prime is 40109963. The next prime is 40109977. The reversal of 40109968 is 86990104.

It can be written as a sum of positive squares in only one way, i.e., 20502784 + 19607184 = 4528^2 + 4428^2 .

It is a super-2 number, since 2×40109968² = 3217619065922048, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40109963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1253421 + ... + 1253452.

Almost surely, 2^40109968 is an apocalyptic number.

It is an amenable number.

40109968 is a deficient number, since it is larger than the sum of its proper divisors (37603126).

40109968 is a wasteful number, since it uses less digits than its factorization.

40109968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2506881 (or 2506875 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 40109968 is about 6333.2430870763. The cubic root of 40109968 is about 342.3083069609.

The spelling of 40109968 in words is "forty million, one hundred nine thousand, nine hundred sixty-eight".