247489049 has 4 divisors (see below), whose sum is σ = 248430336. Its totient is φ = 246547764.

The previous prime is 247489013. The next prime is 247489057. The reversal of 247489049 is 940984742.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 247489049 - 2¹² = 247484953 is a prime.

It is a super-2 number, since 2×247489049² = 122501658749848802, 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 = 247488994 and 247489012.

It is not an unprimeable number, because it can be changed into a prime (247419049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 470249 + ... + 470774.

It is an arithmetic number, because the mean of its divisors is an integer number (62107584).

Almost surely, 2^247489049 is an apocalyptic number.

It is an amenable number.

247489049 is a deficient number, since it is larger than the sum of its proper divisors (941287).

247489049 is an equidigital number, since it uses as much as digits as its factorization.

247489049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 941286.

The product of its (nonzero) digits is 580608, while the sum is 47.

The square root of 247489049 is about 15731.7846730751. The cubic root of 247489049 is about 627.8443575844.

The spelling of 247489049 in words is "two hundred forty-seven million, four hundred eighty-nine thousand, forty-nine".