40748987 has 2 divisors, whose sum is σ = 40748988. Its totient is φ = 40748986.

The previous prime is 40748969. The next prime is 40748989. The reversal of 40748987 is 78984704.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40748987 - 2⁶ = 40748923 is a prime.

Together with 40748989, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40748989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20374493 + 20374494.

It is an arithmetic number, because the mean of its divisors is an integer number (20374494).

Almost surely, 2^40748987 is an apocalyptic number.

40748987 is a deficient number, since it is larger than the sum of its proper divisors (1).

40748987 is an equidigital number, since it uses as much as digits as its factorization.

40748987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 451584, while the sum is 47.

The square root of 40748987 is about 6383.4933226252. The cubic root of 40748987 is about 344.1165860239.

It can be divided in two parts, 407 and 48987, that added together give a palindrome (49394).

The spelling of 40748987 in words is "forty million, seven hundred forty-eight thousand, nine hundred eighty-seven".