34878887 has 2 divisors, whose sum is σ = 34878888. Its totient is φ = 34878886.

The previous prime is 34878869. The next prime is 34878911. The reversal of 34878887 is 78887843.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 34878887 - 2⁸ = 34878631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34838887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17439443 + 17439444.

It is an arithmetic number, because the mean of its divisors is an integer number (17439444).

Almost surely, 2^34878887 is an apocalyptic number.

34878887 is a deficient number, since it is larger than the sum of its proper divisors (1).

34878887 is an equidigital number, since it uses as much as digits as its factorization.

34878887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2408448, while the sum is 53.

The square root of 34878887 is about 5905.8349960018. The cubic root of 34878887 is about 326.7288914969.

The spelling of 34878887 in words is "thirty-four million, eight hundred seventy-eight thousand, eight hundred eighty-seven".