34385779 has 4 divisors (see below), whose sum is σ = 34413984. Its totient is φ = 34357576.

The previous prime is 34385749. The next prime is 34385783. The reversal of 34385779 is 97758343.

It is a happy number.

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 34385779 - 2⁷ = 34385651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (34385719) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12187 + ... + 14740.

It is an arithmetic number, because the mean of its divisors is an integer number (8603496).

Almost surely, 2^34385779 is an apocalyptic number.

34385779 is a deficient number, since it is larger than the sum of its proper divisors (28205).

34385779 is a wasteful number, since it uses less digits than its factorization.

34385779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28204.

The product of its digits is 635040, while the sum is 46.

The square root of 34385779 is about 5863.9388639378. The cubic root of 34385779 is about 325.1818437980.

The spelling of 34385779 in words is "thirty-four million, three hundred eighty-five thousand, seven hundred seventy-nine".