345454387 has 2 divisors, whose sum is σ = 345454388. Its totient is φ = 345454386.

The previous prime is 345454349. The next prime is 345454391. The reversal of 345454387 is 783454543.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 345454387 - 2⁷ = 345454259 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (345451387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172727193 + 172727194.

It is an arithmetic number, because the mean of its divisors is an integer number (172727194).

Almost surely, 2^345454387 is an apocalyptic number.

345454387 is a deficient number, since it is larger than the sum of its proper divisors (1).

345454387 is an equidigital number, since it uses as much as digits as its factorization.

345454387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 806400, while the sum is 43.

The square root of 345454387 is about 18586.4032830454. The cubic root of 345454387 is about 701.6656842992.

The spelling of 345454387 in words is "three hundred forty-five million, four hundred fifty-four thousand, three hundred eighty-seven".