40236134399 has 4 divisors (see below), whose sum is σ = 40238878680. Its totient is φ = 40233390120.

The previous prime is 40236134387. The next prime is 40236134413. The reversal of 40236134399 is 99343163204.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 40236134399 - 2¹² = 40236130303 is a prime.

It is a super-2 number, since 2×40236134399² (a number of 22 digits) 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 (40236134329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1350029 + ... + 1379510.

It is an arithmetic number, because the mean of its divisors is an integer number (10059719670).

Almost surely, 2^40236134399 is an apocalyptic number.

40236134399 is a deficient number, since it is larger than the sum of its proper divisors (2744281).

40236134399 is a wasteful number, since it uses less digits than its factorization.

40236134399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2744280.

The product of its (nonzero) digits is 419904, while the sum is 44.

The spelling of 40236134399 in words is "forty billion, two hundred thirty-six million, one hundred thirty-four thousand, three hundred ninety-nine".