40117783 has 2 divisors, whose sum is σ = 40117784. Its totient is φ = 40117782.

The previous prime is 40117741. The next prime is 40117789. The reversal of 40117783 is 38771104.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40117783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40117789) 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 as a sum of consecutive naturals, namely, 20058891 + 20058892.

It is an arithmetic number, because the mean of its divisors is an integer number (20058892).

Almost surely, 2^40117783 is an apocalyptic number.

40117783 is a deficient number, since it is larger than the sum of its proper divisors (1).

40117783 is an equidigital number, since it uses as much as digits as its factorization.

40117783 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 40117783 is about 6333.8600395020. The cubic root of 40117783 is about 342.3305372263.

Adding to 40117783 its reverse (38771104), we get a palindrome (78888887).

The spelling of 40117783 in words is "forty million, one hundred seventeen thousand, seven hundred eighty-three".