349507755 has 48 divisors (see below), whose sum is σ = 640117920. Its totient is φ = 175924224.

The previous prime is 349507751. The next prime is 349507783. The reversal of 349507755 is 557705943.

It is not a de Polignac number, because 349507755 - 2² = 349507751 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 349507755.

It is not an unprimeable number, because it can be changed into a prime (349507751) 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 47 ways as a sum of consecutive naturals, for example, 287529 + ... + 288741.

It is an arithmetic number, because the mean of its divisors is an integer number (13335790).

Almost surely, 2^349507755 is an apocalyptic number.

349507755 is a deficient number, since it is larger than the sum of its proper divisors (290610165).

349507755 is a wasteful number, since it uses less digits than its factorization.

349507755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1580 (or 1577 counting only the distinct ones).

The product of its (nonzero) digits is 661500, while the sum is 45.

The square root of 349507755 is about 18695.1265039849. The cubic root of 349507755 is about 704.3993374809.

The spelling of 349507755 in words is "three hundred forty-nine million, five hundred seven thousand, seven hundred fifty-five".