349791847 has 4 divisors (see below), whose sum is σ = 370367856. Its totient is φ = 329215840.

The previous prime is 349791833. The next prime is 349791853. The reversal of 349791847 is 748197943.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 748197943 = 1667 ⋅448829.

It is a cyclic number.

It is not a de Polignac number, because 349791847 - 2¹⁵ = 349759079 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 349791794 and 349791803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349791887) 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, 10287979 + ... + 10288012.

It is an arithmetic number, because the mean of its divisors is an integer number (92591964).

Almost surely, 2^349791847 is an apocalyptic number.

349791847 is a deficient number, since it is larger than the sum of its proper divisors (20576009).

349791847 is a wasteful number, since it uses less digits than its factorization.

349791847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20576008.

The product of its digits is 1524096, while the sum is 52.

The square root of 349791847 is about 18702.7229835658. The cubic root of 349791847 is about 704.5901391806.

The spelling of 349791847 in words is "three hundred forty-nine million, seven hundred ninety-one thousand, eight hundred forty-seven".