249292489 has 2 divisors, whose sum is σ = 249292490. Its totient is φ = 249292488.

The previous prime is 249292429. The next prime is 249292493. The reversal of 249292489 is 984292942.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 249008400 + 284089 = 15780^2 + 533^2 .

It is a cyclic number.

It is not a de Polignac number, because 249292489 - 2⁷ = 249292361 is a prime.

It is not a weakly prime, because it can be changed into another prime (249292429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124646244 + 124646245.

It is an arithmetic number, because the mean of its divisors is an integer number (124646245).

Almost surely, 2^249292489 is an apocalyptic number.

It is an amenable number.

249292489 is a deficient number, since it is larger than the sum of its proper divisors (1).

249292489 is an equidigital number, since it uses as much as digits as its factorization.

249292489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 746496, while the sum is 49.

The square root of 249292489 is about 15788.9989866362. The cubic root of 249292489 is about 629.3656914578.

The spelling of 249292489 in words is "two hundred forty-nine million, two hundred ninety-two thousand, four hundred eighty-nine".