345419993 has 2 divisors, whose sum is σ = 345419994. Its totient is φ = 345419992.

The previous prime is 345419959. The next prime is 345420017. The reversal of 345419993 is 399914543.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 196897024 + 148522969 = 14032^2 + 12187^2 .

It is a cyclic number.

It is not a de Polignac number, because 345419993 - 2⁶ = 345419929 is a prime.

It is not a weakly prime, because it can be changed into another prime (345419933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172709996 + 172709997.

It is an arithmetic number, because the mean of its divisors is an integer number (172709997).

Almost surely, 2^345419993 is an apocalyptic number.

It is an amenable number.

345419993 is a deficient number, since it is larger than the sum of its proper divisors (1).

345419993 is an equidigital number, since it uses as much as digits as its factorization.

345419993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 524880, while the sum is 47.

The square root of 345419993 is about 18585.4780137612. The cubic root of 345419993 is about 701.6423972012.

The spelling of 345419993 in words is "three hundred forty-five million, four hundred nineteen thousand, nine hundred ninety-three".