47645893 has 2 divisors, whose sum is σ = 47645894. Its totient is φ = 47645892.

The previous prime is 47645891. The next prime is 47645929. The reversal of 47645893 is 39854674.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47568609 + 77284 = 6897^2 + 278^2 .

It is a cyclic number.

It is not a de Polignac number, because 47645893 - 2¹ = 47645891 is a prime.

It is a super-2 number, since 2×47645893² = 4540262239534898, which contains 22 as substring.

Together with 47645891, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47645891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23822946 + 23822947.

It is an arithmetic number, because the mean of its divisors is an integer number (23822947).

Almost surely, 2^47645893 is an apocalyptic number.

It is an amenable number.

47645893 is a deficient number, since it is larger than the sum of its proper divisors (1).

47645893 is an equidigital number, since it uses as much as digits as its factorization.

47645893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 725760, while the sum is 46.

The square root of 47645893 is about 6902.6004520036. The cubic root of 47645893 is about 362.5282241996.

The spelling of 47645893 in words is "forty-seven million, six hundred forty-five thousand, eight hundred ninety-three".