63421093 has 2 divisors, whose sum is σ = 63421094. Its totient is φ = 63421092.

The previous prime is 63421091. The next prime is 63421103. The reversal of 63421093 is 39012436.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59954049 + 3467044 = 7743^2 + 1862^2 .

It is a cyclic number.

It is not a de Polignac number, because 63421093 - 2¹ = 63421091 is a prime.

Together with 63421091, 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 (63421091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31710546 + 31710547.

It is an arithmetic number, because the mean of its divisors is an integer number (31710547).

Almost surely, 2^63421093 is an apocalyptic number.

It is an amenable number.

63421093 is a deficient number, since it is larger than the sum of its proper divisors (1).

63421093 is an equidigital number, since it uses as much as digits as its factorization.

63421093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 63421093 is about 7963.7361206911. The cubic root of 63421093 is about 398.7902889360.

The spelling of 63421093 in words is "sixty-three million, four hundred twenty-one thousand, ninety-three".