349734145 has 4 divisors (see below), whose sum is σ = 419680980. Its totient is φ = 279787312.

The previous prime is 349734137. The next prime is 349734181. The reversal of 349734145 is 541437943.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 195552256 + 154181889 = 13984^2 + 12417^2 .

It is a cyclic number.

It is not a de Polignac number, because 349734145 - 2³ = 349734137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 349734098 and 349734107.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34973410 + ... + 34973419.

It is an arithmetic number, because the mean of its divisors is an integer number (104920245).

Almost surely, 2^349734145 is an apocalyptic number.

It is an amenable number.

349734145 is a deficient number, since it is larger than the sum of its proper divisors (69946835).

349734145 is an equidigital number, since it uses as much as digits as its factorization.

349734145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69946834.

The product of its digits is 181440, while the sum is 40.

The square root of 349734145 is about 18701.1803103441. The cubic root of 349734145 is about 704.5513937607.

The spelling of 349734145 in words is "three hundred forty-nine million, seven hundred thirty-four thousand, one hundred forty-five".