40140766 has 4 divisors (see below), whose sum is σ = 60211152. Its totient is φ = 20070382.

The previous prime is 40140761. The next prime is 40140781. The reversal of 40140766 is 66704104.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×40140766² = 3222562190133512, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40140761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10035190 + ... + 10035193.

It is an arithmetic number, because the mean of its divisors is an integer number (15052788).

Almost surely, 2^40140766 is an apocalyptic number.

40140766 is a deficient number, since it is larger than the sum of its proper divisors (20070386).

40140766 is a wasteful number, since it uses less digits than its factorization.

40140766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20070385.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 40140766 is about 6335.6740762132. The cubic root of 40140766 is about 342.3958971089.

The spelling of 40140766 in words is "forty million, one hundred forty thousand, seven hundred sixty-six".