229979951 has 2 divisors, whose sum is σ = 229979952. Its totient is φ = 229979950.

The previous prime is 229979923. The next prime is 229979987. The reversal of 229979951 is 159979922.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-229979951 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 229979893 and 229979902.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (229979051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114989975 + 114989976.

It is an arithmetic number, because the mean of its divisors is an integer number (114989976).

Almost surely, 2^229979951 is an apocalyptic number.

229979951 is a deficient number, since it is larger than the sum of its proper divisors (1).

229979951 is an equidigital number, since it uses as much as digits as its factorization.

229979951 is an evil number, because the sum of its binary digits is even.

The product of its digits is 918540, while the sum is 53.

The square root of 229979951 is about 15165.0898777422. The cubic root of 229979951 is about 612.6747642906.

The spelling of 229979951 in words is "two hundred twenty-nine million, nine hundred seventy-nine thousand, nine hundred fifty-one".