348405779 has 4 divisors (see below), whose sum is σ = 350352360. Its totient is φ = 346459200.

The previous prime is 348405763. The next prime is 348405809. The reversal of 348405779 is 977504843.

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 348405779 - 2⁴ = 348405763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (348405749) 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, 973022 + ... + 973379.

It is an arithmetic number, because the mean of its divisors is an integer number (87588090).

Almost surely, 2^348405779 is an apocalyptic number.

348405779 is a deficient number, since it is larger than the sum of its proper divisors (1946581).

348405779 is a wasteful number, since it uses less digits than its factorization.

348405779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1946580.

The product of its (nonzero) digits is 846720, while the sum is 47.

The square root of 348405779 is about 18665.6309563861. The cubic root of 348405779 is about 703.6582491093.

The spelling of 348405779 in words is "three hundred forty-eight million, four hundred five thousand, seven hundred seventy-nine".