345916859 has 4 divisors (see below), whose sum is σ = 350084616. Its totient is φ = 341749104.

The previous prime is 345916847. The next prime is 345916861. The reversal of 345916859 is 958619543.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 958619543 = 7 ⋅136945649.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-345916859 is a prime.

It is a super-3 number, since 3×345916859³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345316859) 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, 2083754 + ... + 2083919.

It is an arithmetic number, because the mean of its divisors is an integer number (87521154).

Almost surely, 2^345916859 is an apocalyptic number.

345916859 is a deficient number, since it is larger than the sum of its proper divisors (4167757).

345916859 is an equidigital number, since it uses as much as digits as its factorization.

345916859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4167756.

The product of its digits is 1166400, while the sum is 50.

The square root of 345916859 is about 18598.8402595431. The cubic root of 345916859 is about 701.9786595624.

The spelling of 345916859 in words is "three hundred forty-five million, nine hundred sixteen thousand, eight hundred fifty-nine".