349191505 has 8 divisors (see below), whose sum is σ = 451262952. Its totient is φ = 257864448.

The previous prime is 349191503. The next prime is 349191539. The reversal of 349191505 is 505191943.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 20277009 + 328914496 = 4503^2 + 18136^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 349191505 - 2¹ = 349191503 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (349191503) 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 7 ways as a sum of consecutive naturals, for example, 2686024 + ... + 2686153.

It is an arithmetic number, because the mean of its divisors is an integer number (56407869).

Almost surely, 2^349191505 is an apocalyptic number.

It is an amenable number.

349191505 is a deficient number, since it is larger than the sum of its proper divisors (102071447).

349191505 is a wasteful number, since it uses less digits than its factorization.

349191505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5372195.

The product of its (nonzero) digits is 24300, while the sum is 37.

The square root of 349191505 is about 18686.6665031514. Note that the first 3 decimals coincide. The cubic root of 349191505 is about 704.1868161938.

The spelling of 349191505 in words is "three hundred forty-nine million, one hundred ninety-one thousand, five hundred five".