345387844 has 12 divisors (see below), whose sum is σ = 639983484. Its totient is φ = 162535424.

The previous prime is 345387841. The next prime is 345387851. The reversal of 345387844 is 448783543.

It can be written as a sum of positive squares in 2 ways, for example, as 119246400 + 226141444 = 10920^2 + 15038^2 .

It is a junction number, because it is equal to n+sod(n) for n = 345387794 and 345387803.

It is not an unprimeable number, because it can be changed into a prime (345387841) 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, 2539549 + ... + 2539684.

It is an arithmetic number, because the mean of its divisors is an integer number (53331957).

Almost surely, 2^345387844 is an apocalyptic number.

345387844 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

345387844 is a deficient number, since it is larger than the sum of its proper divisors (294595640).

345387844 is a wasteful number, since it uses less digits than its factorization.

345387844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5079254 (or 5079252 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 46.

The square root of 345387844 is about 18584.6130979367. The cubic root of 345387844 is about 701.6206287244.

The spelling of 345387844 in words is "three hundred forty-five million, three hundred eighty-seven thousand, eight hundred forty-four".