47909369 has 2 divisors, whose sum is σ = 47909370. Its totient is φ = 47909368.

The previous prime is 47909359. The next prime is 47909377. The reversal of 47909369 is 96390974.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44622400 + 3286969 = 6680^2 + 1813^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47909369 is a prime.

It is a super-2 number, since 2×47909369² = 4590615275956322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (47909359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23954684 + 23954685.

It is an arithmetic number, because the mean of its divisors is an integer number (23954685).

Almost surely, 2^47909369 is an apocalyptic number.

It is an amenable number.

47909369 is a deficient number, since it is larger than the sum of its proper divisors (1).

47909369 is an equidigital number, since it uses as much as digits as its factorization.

47909369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 367416, while the sum is 47.

The square root of 47909369 is about 6921.6594108638. The cubic root of 47909369 is about 363.1952418767.

The spelling of 47909369 in words is "forty-seven million, nine hundred nine thousand, three hundred sixty-nine".