249980693 has 2 divisors, whose sum is σ = 249980694. Its totient is φ = 249980692.

The previous prime is 249980681. The next prime is 249980719. The reversal of 249980693 is 396089942.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 164916964 + 85063729 = 12842^2 + 9223^2 .

It is a cyclic number.

It is not a de Polignac number, because 249980693 - 2⁴ = 249980677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (249983693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124990346 + 124990347.

It is an arithmetic number, because the mean of its divisors is an integer number (124990347).

Almost surely, 2^249980693 is an apocalyptic number.

It is an amenable number.

249980693 is a deficient number, since it is larger than the sum of its proper divisors (1).

249980693 is an equidigital number, since it uses as much as digits as its factorization.

249980693 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 839808, while the sum is 50.

The square root of 249980693 is about 15810.7777481059. Note that the first 4 decimals coincide. The cubic root of 249980693 is about 629.9443076661.

The spelling of 249980693 in words is "two hundred forty-nine million, nine hundred eighty thousand, six hundred ninety-three".