226039991 has 2 divisors, whose sum is σ = 226039992. Its totient is φ = 226039990.

The previous prime is 226039963. The next prime is 226040039. The reversal of 226039991 is 199930622.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 226039991 - 2⁶ = 226039927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (226039951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113019995 + 113019996.

It is an arithmetic number, because the mean of its divisors is an integer number (113019996).

Almost surely, 2^226039991 is an apocalyptic number.

226039991 is a deficient number, since it is larger than the sum of its proper divisors (1).

226039991 is an equidigital number, since it uses as much as digits as its factorization.

226039991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52488, while the sum is 41.

The square root of 226039991 is about 15034.6264004131. The cubic root of 226039991 is about 609.1558609667.

The spelling of 226039991 in words is "two hundred twenty-six million, thirty-nine thousand, nine hundred ninety-one".