349644785 has 16 divisors (see below), whose sum is σ = 479817216. Its totient is φ = 239604288.

The previous prime is 349644769. The next prime is 349644787. The reversal of 349644785 is 587446943.

It is not a de Polignac number, because 349644785 - 2⁴ = 349644769 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (349644787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100739 + ... + 104151.

It is an arithmetic number, because the mean of its divisors is an integer number (29988576).

Almost surely, 2^349644785 is an apocalyptic number.

349644785 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

349644785 is a deficient number, since it is larger than the sum of its proper divisors (130172431).

349644785 is a wasteful number, since it uses less digits than its factorization.

349644785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6352.

The product of its digits is 2903040, while the sum is 50.

The square root of 349644785 is about 18698.7910036986. The cubic root of 349644785 is about 704.4913823907.

The spelling of 349644785 in words is "three hundred forty-nine million, six hundred forty-four thousand, seven hundred eighty-five".