40127783 has 4 divisors (see below), whose sum is σ = 40276128. Its totient is φ = 39979440.

The previous prime is 40127779. The next prime is 40127827. The reversal of 40127783 is 38772104.

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 40127783 - 2² = 40127779 is a prime.

It is a super-2 number, since 2×40127783² = 3220477936990178, which 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 (40127083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73766 + ... + 74307.

It is an arithmetic number, because the mean of its divisors is an integer number (10069032).

Almost surely, 2^40127783 is an apocalyptic number.

40127783 is a deficient number, since it is larger than the sum of its proper divisors (148345).

40127783 is a wasteful number, since it uses less digits than its factorization.

40127783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148344.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 40127783 is about 6334.6493983487. The cubic root of 40127783 is about 342.3589786531.

Adding to 40127783 its reverse (38772104), we get a palindrome (78899887).

The spelling of 40127783 in words is "forty million, one hundred twenty-seven thousand, seven hundred eighty-three".