345349789 has 4 divisors (see below), whose sum is σ = 345435100. Its totient is φ = 345264480.

The previous prime is 345349759. The next prime is 345349793. The reversal of 345349789 is 987943543.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 198528100 + 146821689 = 14090^2 + 12117^2 .

It is a cyclic number.

It is not a de Polignac number, because 345349789 - 2¹³ = 345341597 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 (345349709) 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, 36264 + ... + 44785.

It is an arithmetic number, because the mean of its divisors is an integer number (86358775).

Almost surely, 2^345349789 is an apocalyptic number.

It is an amenable number.

345349789 is a deficient number, since it is larger than the sum of its proper divisors (85311).

345349789 is an equidigital number, since it uses as much as digits as its factorization.

345349789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85310.

The product of its digits is 3265920, while the sum is 52.

The square root of 345349789 is about 18583.5892388957. The cubic root of 345349789 is about 701.5948594777.

The spelling of 345349789 in words is "three hundred forty-five million, three hundred forty-nine thousand, seven hundred eighty-nine".