247446149 has 2 divisors, whose sum is σ = 247446150. Its totient is φ = 247446148.

The previous prime is 247446137. The next prime is 247446187. The reversal of 247446149 is 941644742.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 247055524 + 390625 = 15718^2 + 625^2 .

It is a cyclic number.

It is not a de Polignac number, because 247446149 - 2²⁰ = 246397573 is a prime.

It is a super-2 number, since 2×247446149² = 122459193309860402, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (247446109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123723074 + 123723075.

It is an arithmetic number, because the mean of its divisors is an integer number (123723075).

Almost surely, 2^247446149 is an apocalyptic number.

It is an amenable number.

247446149 is a deficient number, since it is larger than the sum of its proper divisors (1).

247446149 is an equidigital number, since it uses as much as digits as its factorization.

247446149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 193536, while the sum is 41.

The square root of 247446149 is about 15730.4211323156. The cubic root of 247446149 is about 627.8080784312.

The spelling of 247446149 in words is "two hundred forty-seven million, four hundred forty-six thousand, one hundred forty-nine".