40140868 has 6 divisors (see below), whose sum is σ = 70246526. Its totient is φ = 20070432.

The previous prime is 40140857. The next prime is 40140883. The reversal of 40140868 is 86804104.

It can be written as a sum of positive squares in only one way, i.e., 36385024 + 3755844 = 6032^2 + 1938^2 .

It is a super-2 number, since 2×40140868² = 3222578567586848, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5017605 + ... + 5017612.

Almost surely, 2^40140868 is an apocalyptic number.

It is an amenable number.

40140868 is a deficient number, since it is larger than the sum of its proper divisors (30105658).

40140868 is a wasteful number, since it uses less digits than its factorization.

40140868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10035221 (or 10035219 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 40140868 is about 6335.6821258646. The cubic root of 40140868 is about 342.3961871245.

The spelling of 40140868 in words is "forty million, one hundred forty thousand, eight hundred sixty-eight".