47279249 has 2 divisors, whose sum is σ = 47279250. Its totient is φ = 47279248.

The previous prime is 47279213. The next prime is 47279263. The reversal of 47279249 is 94297274.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35617024 + 11662225 = 5968^2 + 3415^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47279249 is a prime.

It is not a weakly prime, because it can be changed into another prime (47279269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23639624 + 23639625.

It is an arithmetic number, because the mean of its divisors is an integer number (23639625).

Almost surely, 2^47279249 is an apocalyptic number.

It is an amenable number.

47279249 is a deficient number, since it is larger than the sum of its proper divisors (1).

47279249 is an equidigital number, since it uses as much as digits as its factorization.

47279249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016, while the sum is 44.

The square root of 47279249 is about 6875.9907649734. The cubic root of 47279249 is about 361.5959213301.

The spelling of 47279249 in words is "forty-seven million, two hundred seventy-nine thousand, two hundred forty-nine".