40140039029 has 8 divisors (see below), whose sum is σ = 40641714360. Its totient is φ = 39640408000.

The previous prime is 40140039011. The next prime is 40140039041. The reversal of 40140039029 is 92093004104.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6528316804 + 33611722225 = 80798^2 + 183335^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 40140039029 - 2²⁴ = 40123261813 is a prime.

It is a super-2 number, since 2×40140039029² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 40140038986 and 40140039004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40140039059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 471542 + ... + 550119.

It is an arithmetic number, because the mean of its divisors is an integer number (5080214295).

Almost surely, 2^40140039029 is an apocalyptic number.

It is an amenable number.

40140039029 is a deficient number, since it is larger than the sum of its proper divisors (501675331).

40140039029 is a wasteful number, since it uses less digits than its factorization.

40140039029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1022151.

The product of its (nonzero) digits is 7776, while the sum is 32.

The spelling of 40140039029 in words is "forty billion, one hundred forty million, thirty-nine thousand, twenty-nine".