345120449 has 2 divisors, whose sum is σ = 345120450. Its totient is φ = 345120448.

The previous prime is 345120443. The next prime is 345120467. The reversal of 345120449 is 944021543.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 305026225 + 40094224 = 17465^2 + 6332^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-345120449 is a prime.

It is not a weakly prime, because it can be changed into another prime (345120443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172560224 + 172560225.

It is an arithmetic number, because the mean of its divisors is an integer number (172560225).

Almost surely, 2^345120449 is an apocalyptic number.

It is an amenable number.

345120449 is a deficient number, since it is larger than the sum of its proper divisors (1).

345120449 is an equidigital number, since it uses as much as digits as its factorization.

345120449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 345120449 is about 18577.4177161413. The cubic root of 345120449 is about 701.4395199726.

The spelling of 345120449 in words is "three hundred forty-five million, one hundred twenty thousand, four hundred forty-nine".