47813669 has 2 divisors, whose sum is σ = 47813670. Its totient is φ = 47813668.

The previous prime is 47813651. The next prime is 47813693. The reversal of 47813669 is 96631874.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40322500 + 7491169 = 6350^2 + 2737^2 .

It is a cyclic number.

It is not a de Polignac number, because 47813669 - 2⁸ = 47813413 is a prime.

It is a super-2 number, since 2×47813669² = 4572293886483122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47813609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23906834 + 23906835.

It is an arithmetic number, because the mean of its divisors is an integer number (23906835).

Almost surely, 2^47813669 is an apocalyptic number.

It is an amenable number.

47813669 is a deficient number, since it is larger than the sum of its proper divisors (1).

47813669 is an equidigital number, since it uses as much as digits as its factorization.

47813669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 44.

The square root of 47813669 is about 6914.7428730214. The cubic root of 47813669 is about 362.9532505624.

The spelling of 47813669 in words is "forty-seven million, eight hundred thirteen thousand, six hundred sixty-nine".