345455393 has 2 divisors, whose sum is σ = 345455394. Its totient is φ = 345455392.

The previous prime is 345455389. The next prime is 345455437. The reversal of 345455393 is 393554543.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 345104929 + 350464 = 18577^2 + 592^2 .

It is a cyclic number.

It is not a de Polignac number, because 345455393 - 2² = 345455389 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 345455393.

It is not a weakly prime, because it can be changed into another prime (345455323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172727696 + 172727697.

It is an arithmetic number, because the mean of its divisors is an integer number (172727697).

Almost surely, 2^345455393 is an apocalyptic number.

It is an amenable number.

345455393 is a deficient number, since it is larger than the sum of its proper divisors (1).

345455393 is an equidigital number, since it uses as much as digits as its factorization.

345455393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 486000, while the sum is 41.

The square root of 345455393 is about 18586.4303458195. The cubic root of 345455393 is about 701.6663654069. Note that the first 3 decimals are identical.

The spelling of 345455393 in words is "three hundred forty-five million, four hundred fifty-five thousand, three hundred ninety-three".