47245279 has 2 divisors, whose sum is σ = 47245280. Its totient is φ = 47245278.

The previous prime is 47245241. The next prime is 47245291. The reversal of 47245279 is 97254274.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47245279 - 2¹⁹ = 46720991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47245579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23622639 + 23622640.

It is an arithmetic number, because the mean of its divisors is an integer number (23622640).

Almost surely, 2^47245279 is an apocalyptic number.

47245279 is a deficient number, since it is larger than the sum of its proper divisors (1).

47245279 is an equidigital number, since it uses as much as digits as its factorization.

47245279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 141120, while the sum is 40.

The square root of 47245279 is about 6873.5201316356. The cubic root of 47245279 is about 361.5092987156.

It can be divided in two parts, 47245 and 279, that added together give a square (47524 = 218²).

The spelling of 47245279 in words is "forty-seven million, two hundred forty-five thousand, two hundred seventy-nine".