249386453 has 2 divisors, whose sum is σ = 249386454. Its totient is φ = 249386452.

The previous prime is 249386411. The next prime is 249386461. The reversal of 249386453 is 354683942.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 240157009 + 9229444 = 15497^2 + 3038^2 .

It is a cyclic number.

It is not a de Polignac number, because 249386453 - 2¹⁰ = 249385429 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 (249386353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124693226 + 124693227.

It is an arithmetic number, because the mean of its divisors is an integer number (124693227).

Almost surely, 2^249386453 is an apocalyptic number.

It is an amenable number.

249386453 is a deficient number, since it is larger than the sum of its proper divisors (1).

249386453 is an equidigital number, since it uses as much as digits as its factorization.

249386453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 622080, while the sum is 44.

The square root of 249386453 is about 15791.9743224209. The cubic root of 249386453 is about 629.4447555985. Note that the first 3 decimals are identical.

The spelling of 249386453 in words is "two hundred forty-nine million, three hundred eighty-six thousand, four hundred fifty-three".