347479813 has 8 divisors (see below), whose sum is σ = 370607832. Its totient is φ = 324650496.

The previous prime is 347479807. The next prime is 347479831. The reversal of 347479813 is 318974743.

It can be written as a sum of positive squares in 4 ways, for example, as 22867524 + 324612289 = 4782^2 + 18017^2 .

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

It is not a de Polignac number, because 347479813 - 2¹⁷ = 347348741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (347479843) 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, 72270 + ... + 76927.

It is an arithmetic number, because the mean of its divisors is an integer number (46325979).

Almost surely, 2^347479813 is an apocalyptic number.

It is an amenable number.

347479813 is a deficient number, since it is larger than the sum of its proper divisors (23128019).

347479813 is a wasteful number, since it uses less digits than its factorization.

347479813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149351.

The product of its digits is 508032, while the sum is 46.

The square root of 347479813 is about 18640.8104169320. The cubic root of 347479813 is about 703.0343198363.

The spelling of 347479813 in words is "three hundred forty-seven million, four hundred seventy-nine thousand, eight hundred thirteen".