34391887 has 2 divisors, whose sum is σ = 34391888. Its totient is φ = 34391886.

The previous prime is 34391869. The next prime is 34391897. The reversal of 34391887 is 78819343.

It is a happy number.

34391887 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 a de Polignac number, because none of the positive numbers 2^k-34391887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34391857) 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, 17195943 + 17195944.

It is an arithmetic number, because the mean of its divisors is an integer number (17195944).

Almost surely, 2^34391887 is an apocalyptic number.

34391887 is a deficient number, since it is larger than the sum of its proper divisors (1).

34391887 is an equidigital number, since it uses as much as digits as its factorization.

34391887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 43.

The square root of 34391887 is about 5864.4596511529. The cubic root of 34391887 is about 325.2010968455.

The spelling of 34391887 in words is "thirty-four million, three hundred ninety-one thousand, eight hundred eighty-seven".