247064441 has 4 divisors (see below), whose sum is σ = 266069412. Its totient is φ = 228059472.

The previous prime is 247064431. The next prime is 247064449. The reversal of 247064441 is 144460742.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 123298816 + 123765625 = 11104^2 + 11125^2 .

It is a cyclic number.

It is not a de Polignac number, because 247064441 - 2¹⁴ = 247048057 is a prime.

It is a super-2 number, since 2×247064441² = 122081676013284962, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 247064398 and 247064407.

It is not an unprimeable number, because it can be changed into a prime (247064449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9502466 + ... + 9502491.

It is an arithmetic number, because the mean of its divisors is an integer number (66517353).

Almost surely, 2^247064441 is an apocalyptic number.

It is an amenable number.

247064441 is a deficient number, since it is larger than the sum of its proper divisors (19004971).

247064441 is a wasteful number, since it uses less digits than its factorization.

247064441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19004970.

The product of its (nonzero) digits is 21504, while the sum is 32.

The square root of 247064441 is about 15718.2836531219. The cubic root of 247064441 is about 627.4850954381.

The spelling of 247064441 in words is "two hundred forty-seven million, sixty-four thousand, four hundred forty-one".