229906387 has 2 divisors, whose sum is σ = 229906388. Its totient is φ = 229906386.

The previous prime is 229906363. The next prime is 229906463. The reversal of 229906387 is 783609922.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-229906387 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (229904387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114953193 + 114953194.

It is an arithmetic number, because the mean of its divisors is an integer number (114953194).

Almost surely, 2^229906387 is an apocalyptic number.

229906387 is a deficient number, since it is larger than the sum of its proper divisors (1).

229906387 is an equidigital number, since it uses as much as digits as its factorization.

229906387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 229906387 is about 15162.6642447823. The cubic root of 229906387 is about 612.6094316205.

The spelling of 229906387 in words is "two hundred twenty-nine million, nine hundred six thousand, three hundred eighty-seven".