345857939 has 4 divisors (see below), whose sum is σ = 395266224. Its totient is φ = 296449656.

The previous prime is 345857933. The next prime is 345857951. The reversal of 345857939 is 939758543.

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

It is a cyclic number.

It is not a de Polignac number, because 345857939 - 2¹² = 345853843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345857933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24704132 + ... + 24704145.

It is an arithmetic number, because the mean of its divisors is an integer number (98816556).

Almost surely, 2^345857939 is an apocalyptic number.

345857939 is a deficient number, since it is larger than the sum of its proper divisors (49408285).

345857939 is an equidigital number, since it uses as much as digits as its factorization.

345857939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49408284.

The product of its digits is 4082400, while the sum is 53.

The square root of 345857939 is about 18597.2562223571. The cubic root of 345857939 is about 701.9388013035.

It can be divided in two parts, 34585 and 7939, that added together give a palindrome (42524).

The spelling of 345857939 in words is "three hundred forty-five million, eight hundred fifty-seven thousand, nine hundred thirty-nine".