40387869667 has 2 divisors, whose sum is σ = 40387869668. Its totient is φ = 40387869666.

The previous prime is 40387869661. The next prime is 40387869701. The reversal of 40387869667 is 76696878304.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40387869667 - 2⁷ = 40387869539 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40387869599 and 40387869608.

It is not a weakly prime, because it can be changed into another prime (40387869661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20193934833 + 20193934834.

It is an arithmetic number, because the mean of its divisors is an integer number (20193934834).

Almost surely, 2^40387869667 is an apocalyptic number.

40387869667 is a deficient number, since it is larger than the sum of its proper divisors (1).

40387869667 is an equidigital number, since it uses as much as digits as its factorization.

40387869667 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 73156608, while the sum is 64.

The spelling of 40387869667 in words is "forty billion, three hundred eighty-seven million, eight hundred sixty-nine thousand, six hundred sixty-seven".