249025739 has 2 divisors, whose sum is σ = 249025740. Its totient is φ = 249025738.

The previous prime is 249025717. The next prime is 249025753. The reversal of 249025739 is 937520942.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 249025739 - 2¹⁶ = 248960203 is a prime.

It is a super-2 number, since 2×249025739² = 124027637368992242, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 249025696 and 249025705.

It is not a weakly prime, because it can be changed into another prime (249025709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124512869 + 124512870.

It is an arithmetic number, because the mean of its divisors is an integer number (124512870).

Almost surely, 2^249025739 is an apocalyptic number.

249025739 is a deficient number, since it is larger than the sum of its proper divisors (1).

249025739 is an equidigital number, since it uses as much as digits as its factorization.

249025739 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 249025739 is about 15780.5493884085. The cubic root of 249025739 is about 629.1411316586.

The spelling of 249025739 in words is "two hundred forty-nine million, twenty-five thousand, seven hundred thirty-nine".