34878439 has 4 divisors (see below), whose sum is σ = 34894224. Its totient is φ = 34862656.

The previous prime is 34878409. The next prime is 34878449. The reversal of 34878439 is 93487843.

34878439 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 34878439 - 2¹⁷ = 34747367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34878409) 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 in 3 ways as a sum of consecutive naturals, for example, 3907 + ... + 9220.

It is an arithmetic number, because the mean of its divisors is an integer number (8723556).

Almost surely, 2^34878439 is an apocalyptic number.

34878439 is a deficient number, since it is larger than the sum of its proper divisors (15785).

34878439 is a wasteful number, since it uses less digits than its factorization.

34878439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15784.

The product of its digits is 580608, while the sum is 46.

The square root of 34878439 is about 5905.7970672891. The cubic root of 34878439 is about 326.7274926069.

It can be divided in two parts, 348 and 78439, that added together give a palindrome (78787).

The spelling of 34878439 in words is "thirty-four million, eight hundred seventy-eight thousand, four hundred thirty-nine".