264140249 has 2 divisors, whose sum is σ = 264140250. Its totient is φ = 264140248.

The previous prime is 264140221. The next prime is 264140297. The reversal of 264140249 is 942041462.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 208369225 + 55771024 = 14435^2 + 7468^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-264140249 is a prime.

It is a super-2 number, since 2×264140249² = 139540142283564002, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (264140209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132070124 + 132070125.

It is an arithmetic number, because the mean of its divisors is an integer number (132070125).

Almost surely, 2^264140249 is an apocalyptic number.

It is an amenable number.

264140249 is a deficient number, since it is larger than the sum of its proper divisors (1).

264140249 is an equidigital number, since it uses as much as digits as its factorization.

264140249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 264140249 is about 16252.3921008570. The cubic root of 264140249 is about 641.6204452529.

The spelling of 264140249 in words is "two hundred sixty-four million, one hundred forty thousand, two hundred forty-nine".