349447 has 4 divisors (see below), whose sum is σ = 399376. Its totient is φ = 299520.

The previous prime is 349423. The next prime is 349471. The reversal of 349447 is 744943.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 744943 = 503 ⋅1481.

It is an interprime number because it is at equal distance from previous prime (349423) and next prime (349471).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-349447 is a prime.

It is a super-2 number, since 2×349447² = 244226411618, which contains 22 as substring.

It is a Duffinian number.

349447 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349477) 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, 24954 + ... + 24967.

It is an arithmetic number, because the mean of its divisors is an integer number (99844).

2³⁴⁹⁴⁴⁷ is an apocalyptic number.

349447 is a deficient number, since it is larger than the sum of its proper divisors (49929).

349447 is an equidigital number, since it uses as much as digits as its factorization.

349447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49928.

The product of its digits is 12096, while the sum is 31.

The square root of 349447 is about 591.1404232498. The cubic root of 349447 is about 70.4358519825.

The spelling of 349447 in words is "three hundred forty-nine thousand, four hundred forty-seven".