221593039 has 2 divisors, whose sum is σ = 221593040. Its totient is φ = 221593038.

The previous prime is 221593027. The next prime is 221593081. The reversal of 221593039 is 930395122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221593039 - 2⁵ = 221593007 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221592995 and 221593013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221593639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110796519 + 110796520.

It is an arithmetic number, because the mean of its divisors is an integer number (110796520).

Almost surely, 2^221593039 is an apocalyptic number.

221593039 is a deficient number, since it is larger than the sum of its proper divisors (1).

221593039 is an equidigital number, since it uses as much as digits as its factorization.

221593039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14580, while the sum is 34.

The square root of 221593039 is about 14886.0014443100. The cubic root of 221593039 is about 605.1346730225.

The spelling of 221593039 in words is "two hundred twenty-one million, five hundred ninety-three thousand, thirty-nine".