40769987 has 2 divisors, whose sum is σ = 40769988. Its totient is φ = 40769986.

The previous prime is 40769959. The next prime is 40770011. The reversal of 40769987 is 78996704.

It is a happy number.

40769987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40769987 - 2¹⁰ = 40768963 is a prime.

It is not a weakly prime, because it can be changed into another prime (40769947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20384993 + 20384994.

It is an arithmetic number, because the mean of its divisors is an integer number (20384994).

Almost surely, 2^40769987 is an apocalyptic number.

40769987 is a deficient number, since it is larger than the sum of its proper divisors (1).

40769987 is an equidigital number, since it uses as much as digits as its factorization.

40769987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 762048, while the sum is 50.

The square root of 40769987 is about 6385.1379781489. The cubic root of 40769987 is about 344.1756893931.

The spelling of 40769987 in words is "forty million, seven hundred sixty-nine thousand, nine hundred eighty-seven".