40136653 has 4 divisors (see below), whose sum is σ = 40159548. Its totient is φ = 40113760.

The previous prime is 40136651. The next prime is 40136659. The reversal of 40136653 is 35663104.

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

It can be written as a sum of positive squares in 2 ways, for example, as 28323684 + 11812969 = 5322^2 + 3437^2 .

It is a cyclic number.

It is not a de Polignac number, because 40136653 - 2¹ = 40136651 is a prime.

It is a super-2 number, since 2×40136653² = 3221901828084818, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40136651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8578 + ... + 12403.

It is an arithmetic number, because the mean of its divisors is an integer number (10039887).

Almost surely, 2^40136653 is an apocalyptic number.

It is an amenable number.

40136653 is a deficient number, since it is larger than the sum of its proper divisors (22895).

40136653 is a wasteful number, since it uses less digits than its factorization.

40136653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22894.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 40136653 is about 6335.3494773375. The cubic root of 40136653 is about 342.3842022446.

Adding to 40136653 its reverse (35663104), we get a palindrome (75799757).

The spelling of 40136653 in words is "forty million, one hundred thirty-six thousand, six hundred fifty-three".