343815949 has 2 divisors, whose sum is σ = 343815950. Its totient is φ = 343815948.

The previous prime is 343815907. The next prime is 343815959. The reversal of 343815949 is 949518343.

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., 224460324 + 119355625 = 14982^2 + 10925^2 .

It is an emirp because it is prime and its reverse (949518343) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 343815949 - 2¹³ = 343807757 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 343815899 and 343815908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (343815959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171907974 + 171907975.

It is an arithmetic number, because the mean of its divisors is an integer number (171907975).

Almost surely, 2^343815949 is an apocalyptic number.

It is an amenable number.

343815949 is a deficient number, since it is larger than the sum of its proper divisors (1).

343815949 is an equidigital number, since it uses as much as digits as its factorization.

343815949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 466560, while the sum is 46.

The square root of 343815949 is about 18542.2746447139. The cubic root of 343815949 is about 700.5546277852.

The spelling of 343815949 in words is "three hundred forty-three million, eight hundred fifteen thousand, nine hundred forty-nine".