249443741 has 2 divisors, whose sum is σ = 249443742. Its totient is φ = 249443740.

The previous prime is 249443707. The next prime is 249443749. The reversal of 249443741 is 147344942.

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., 218418841 + 31024900 = 14779^2 + 5570^2 .

It is a cyclic number.

It is not a de Polignac number, because 249443741 - 2¹⁴ = 249427357 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 249443695 and 249443704.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (249443749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124721870 + 124721871.

It is an arithmetic number, because the mean of its divisors is an integer number (124721871).

Almost surely, 2^249443741 is an apocalyptic number.

It is an amenable number.

249443741 is a deficient number, since it is larger than the sum of its proper divisors (1).

249443741 is an equidigital number, since it uses as much as digits as its factorization.

249443741 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96768, while the sum is 38.

The square root of 249443741 is about 15793.7880510028. The cubic root of 249443741 is about 629.4929497030.

The spelling of 249443741 in words is "two hundred forty-nine million, four hundred forty-three thousand, seven hundred forty-one".