249262397 has 2 divisors, whose sum is σ = 249262398. Its totient is φ = 249262396.

The previous prime is 249262361. The next prime is 249262423. The reversal of 249262397 is 793262942.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 221741881 + 27520516 = 14891^2 + 5246^2 .

It is a cyclic number.

It is not a de Polignac number, because 249262397 - 2²² = 245068093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (249262297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124631198 + 124631199.

It is an arithmetic number, because the mean of its divisors is an integer number (124631199).

Almost surely, 2^249262397 is an apocalyptic number.

It is an amenable number.

249262397 is a deficient number, since it is larger than the sum of its proper divisors (1).

249262397 is an equidigital number, since it uses as much as digits as its factorization.

249262397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 326592, while the sum is 44.

The square root of 249262397 is about 15788.0460158944. The cubic root of 249262397 is about 629.3403669423.

The spelling of 249262397 in words is "two hundred forty-nine million, two hundred sixty-two thousand, three hundred ninety-seven".