40138653 has 8 divisors (see below), whose sum is σ = 53599968. Its totient is φ = 26718224.

The previous prime is 40138607. The next prime is 40138661. The reversal of 40138653 is 35683104.

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 40138653 - 2¹² = 40134557 is a prime.

It is a super-2 number, since 2×40138653² = 3222222929308818, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40138653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40138603) 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, 7851 + ... + 11912.

It is an arithmetic number, because the mean of its divisors is an integer number (6699996).

Almost surely, 2^40138653 is an apocalyptic number.

It is an amenable number.

40138653 is a deficient number, since it is larger than the sum of its proper divisors (13461315).

40138653 is a wasteful number, since it uses less digits than its factorization.

40138653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20443.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 40138653 is about 6335.5073198600. The cubic root of 40138653 is about 342.3898891250.

The spelling of 40138653 in words is "forty million, one hundred thirty-eight thousand, six hundred fifty-three".