234699209 has 2 divisors, whose sum is σ = 234699210. Its totient is φ = 234699208.

The previous prime is 234699197. The next prime is 234699253. The reversal of 234699209 is 902996432.

It is an a-pointer prime, because the next prime (234699253) can be obtained adding 234699209 to its sum of digits (44).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 233325625 + 1373584 = 15275^2 + 1172^2 .

It is a cyclic number.

It is not a de Polignac number, because 234699209 - 2¹² = 234695113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 234699209.

It is not a weakly prime, because it can be changed into another prime (234692209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117349604 + 117349605.

It is an arithmetic number, because the mean of its divisors is an integer number (117349605).

Almost surely, 2^234699209 is an apocalyptic number.

It is an amenable number.

234699209 is a deficient number, since it is larger than the sum of its proper divisors (1).

234699209 is an equidigital number, since it uses as much as digits as its factorization.

234699209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 209952, while the sum is 44.

The square root of 234699209 is about 15319.8958547374. The cubic root of 234699209 is about 616.8371784954.

The spelling of 234699209 in words is "two hundred thirty-four million, six hundred ninety-nine thousand, two hundred nine".