40136365 has 4 divisors (see below), whose sum is σ = 48163644. Its totient is φ = 32109088.

The previous prime is 40136339. The next prime is 40136387. The reversal of 40136365 is 56363104.

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 29877156 + 10259209 = 5466^2 + 3203^2 .

It is a cyclic number.

It is not a de Polignac number, because 40136365 - 2⁵ = 40136333 is a prime.

It is a super-2 number, since 2×40136365² = 3221855590826450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4013632 + ... + 4013641.

It is an arithmetic number, because the mean of its divisors is an integer number (12040911).

Almost surely, 2^40136365 is an apocalyptic number.

It is an amenable number.

40136365 is a deficient number, since it is larger than the sum of its proper divisors (8027279).

40136365 is an equidigital number, since it uses as much as digits as its factorization.

40136365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8027278.

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

The square root of 40136365 is about 6335.3267476903. The cubic root of 40136365 is about 342.3833833183.

Adding to 40136365 its reverse (56363104), we get a palindrome (96499469).

The spelling of 40136365 in words is "forty million, one hundred thirty-six thousand, three hundred sixty-five".