349039081 has 4 divisors (see below), whose sum is σ = 350989200. Its totient is φ = 347088964.

The previous prime is 349039051. The next prime is 349039111. The reversal of 349039081 is 180930943.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 180930943 = 12269 ⋅14747.

It is an interprime number because it is at equal distance from previous prime (349039051) and next prime (349039111).

It is a cyclic number.

It is not a de Polignac number, because 349039081 - 2¹¹ = 349037033 is a prime.

It is a super-2 number, since 2×349039081² = 243656560130649122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 349039081.

It is not an unprimeable number, because it can be changed into a prime (349039001) 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 3 ways as a sum of consecutive naturals, for example, 974791 + ... + 975148.

It is an arithmetic number, because the mean of its divisors is an integer number (87747300).

Almost surely, 2^349039081 is an apocalyptic number.

It is an amenable number.

349039081 is a deficient number, since it is larger than the sum of its proper divisors (1950119).

349039081 is a wasteful number, since it uses less digits than its factorization.

349039081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1950118.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 349039081 is about 18682.5876419729. The cubic root of 349039081 is about 704.0843408176.

The spelling of 349039081 in words is "three hundred forty-nine million, thirty-nine thousand, eighty-one".