349078969 has 8 divisors (see below), whose sum is σ = 371203560. Its totient is φ = 327131136.

The previous prime is 349078967. The next prime is 349078991. The reversal of 349078969 is 969870943.

It can be written as a sum of positive squares in 4 ways, for example, as 19184400 + 329894569 = 4380^2 + 18163^2 .

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

It is not a de Polignac number, because 349078969 - 2¹ = 349078967 is a prime.

It is a super-2 number, since 2×349078969² = 243712253196205922, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (349078967) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40104 + ... + 48025.

It is an arithmetic number, because the mean of its divisors is an integer number (46400445).

Almost surely, 2^349078969 is an apocalyptic number.

It is an amenable number.

349078969 is a deficient number, since it is larger than the sum of its proper divisors (22124591).

349078969 is a wasteful number, since it uses less digits than its factorization.

349078969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88379.

The product of its (nonzero) digits is 2939328, while the sum is 55.

The square root of 349078969 is about 18683.6551295511. The cubic root of 349078969 is about 704.1111605903. Note that the first 4 decimals are identical.

The spelling of 349078969 in words is "three hundred forty-nine million, seventy-eight thousand, nine hundred sixty-nine".