40136747 has 4 divisors (see below), whose sum is σ = 45870576. Its totient is φ = 34402920.

The previous prime is 40136713. The next prime is 40136773. The reversal of 40136747 is 74763104.

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 40136747 - 2¹⁰ = 40135723 is a prime.

It is a super-2 number, since 2×40136747² = 3221916919484018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40136777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2866904 + ... + 2866917.

It is an arithmetic number, because the mean of its divisors is an integer number (11467644).

Almost surely, 2^40136747 is an apocalyptic number.

40136747 is a deficient number, since it is larger than the sum of its proper divisors (5733829).

40136747 is an equidigital number, since it uses as much as digits as its factorization.

40136747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5733828.

The product of its (nonzero) digits is 14112, while the sum is 32.

The square root of 40136747 is about 6335.3568960241. The cubic root of 40136747 is about 342.3844695323.

The spelling of 40136747 in words is "forty million, one hundred thirty-six thousand, seven hundred forty-seven".