40138535 has 8 divisors (see below), whose sum is σ = 48230640. Its totient is φ = 32067904.

The previous prime is 40138529. The next prime is 40138577. The reversal of 40138535 is 53583104.

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 40138535 - 2⁶ = 40138471 is a prime.

It is a super-2 number, since 2×40138535² = 3222203983892450, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40138498 and 40138507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 917 + ... + 9006.

It is an arithmetic number, because the mean of its divisors is an integer number (6028830).

Almost surely, 2^40138535 is an apocalyptic number.

40138535 is a deficient number, since it is larger than the sum of its proper divisors (8092105).

40138535 is an equidigital number, since it uses as much as digits as its factorization.

40138535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10737.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 40138535 is about 6335.4980072604. The cubic root of 40138535 is about 342.3895536043.

The spelling of 40138535 in words is "forty million, one hundred thirty-eight thousand, five hundred thirty-five".