234397509 has 8 divisors (see below), whose sum is σ = 328979040. Its totient is φ = 148040496.

The previous prime is 234397487. The next prime is 234397519. The reversal of 234397509 is 905793432.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 234397509 - 2⁷ = 234397381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (234397519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2056062 + ... + 2056175.

It is an arithmetic number, because the mean of its divisors is an integer number (41122380).

Almost surely, 2^234397509 is an apocalyptic number.

It is an amenable number.

234397509 is a deficient number, since it is larger than the sum of its proper divisors (94581531).

234397509 is a wasteful number, since it uses less digits than its factorization.

234397509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4112259.

The product of its (nonzero) digits is 204120, while the sum is 42.

The square root of 234397509 is about 15310.0460156069. The cubic root of 234397509 is about 616.5727555393.

The spelling of 234397509 in words is "two hundred thirty-four million, three hundred ninety-seven thousand, five hundred nine".