264389247 has 12 divisors (see below), whose sum is σ = 383258304. Its totient is φ = 175630560.

The previous prime is 264389243. The next prime is 264389249. The reversal of 264389247 is 742983462.

264389247 is a `hidden beast` number, since 26 + 4 + 389 + 247 = 666.

It is not a de Polignac number, because 264389247 - 2² = 264389243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264389243) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49743 + ... + 54800.

It is an arithmetic number, because the mean of its divisors is an integer number (31938192).

Almost surely, 2^264389247 is an apocalyptic number.

264389247 is a deficient number, since it is larger than the sum of its proper divisors (118869057).

264389247 is a wasteful number, since it uses less digits than its factorization.

264389247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104830 (or 104827 counting only the distinct ones).

The product of its digits is 580608, while the sum is 45.

The square root of 264389247 is about 16260.0506456776. The cubic root of 264389247 is about 641.8219947874.

The spelling of 264389247 in words is "two hundred sixty-four million, three hundred eighty-nine thousand, two hundred forty-seven".