349524509 has 2 divisors, whose sum is σ = 349524510. Its totient is φ = 349524508.

The previous prime is 349524457. The next prime is 349524541. The reversal of 349524509 is 905425943.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 294808900 + 54715609 = 17170^2 + 7397^2 .

It is a cyclic number.

It is not a de Polignac number, because 349524509 - 2²⁴ = 332747293 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (349524599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174762254 + 174762255.

It is an arithmetic number, because the mean of its divisors is an integer number (174762255).

Almost surely, 2^349524509 is an apocalyptic number.

It is an amenable number.

349524509 is a deficient number, since it is larger than the sum of its proper divisors (1).

349524509 is an equidigital number, since it uses as much as digits as its factorization.

349524509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 194400, while the sum is 41.

The square root of 349524509 is about 18695.5745833071. The cubic root of 349524509 is about 704.4105926607.

The spelling of 349524509 in words is "three hundred forty-nine million, five hundred twenty-four thousand, five hundred nine".