40140064 has 12 divisors (see below), whose sum is σ = 79025814. Its totient is φ = 20070016.

The previous prime is 40140053. The next prime is 40140073. The reversal of 40140064 is 46004104.

It can be written as a sum of positive squares in only one way, i.e., 37112464 + 3027600 = 6092^2 + 1740^2 .

It is a super-2 number, since 2×40140064² = 3222449475848192, which contains 22 as substring.

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 as a sum of consecutive naturals, namely, 627157 + ... + 627220.

Almost surely, 2^40140064 is an apocalyptic number.

It is an amenable number.

40140064 is a deficient number, since it is larger than the sum of its proper divisors (38885750).

40140064 is a wasteful number, since it uses less digits than its factorization.

40140064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1254387 (or 1254379 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 40140064 is about 6335.6186753939. The cubic root of 40140064 is about 342.3939011054.

Adding to 40140064 its reverse (46004104), we get a palindrome (86144168).

The spelling of 40140064 in words is "forty million, one hundred forty thousand, sixty-four".