347491109 has 4 divisors (see below), whose sum is σ = 397132704. Its totient is φ = 297849516.

The previous prime is 347491103. The next prime is 347491141. The reversal of 347491109 is 901194743.

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: 901194743 = 751 ⋅1199993.

It is a cyclic number.

It is not a de Polignac number, because 347491109 - 2⁴ = 347491093 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 (347491103) 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, 24820787 + ... + 24820800.

It is an arithmetic number, because the mean of its divisors is an integer number (99283176).

Almost surely, 2^347491109 is an apocalyptic number.

It is an amenable number.

347491109 is a deficient number, since it is larger than the sum of its proper divisors (49641595).

347491109 is an equidigital number, since it uses as much as digits as its factorization.

347491109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49641594.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 347491109 is about 18641.1134055882. The cubic root of 347491109 is about 703.0419379187.

The spelling of 347491109 in words is "three hundred forty-seven million, four hundred ninety-one thousand, one hundred nine".