239229457 has 8 divisors (see below), whose sum is σ = 260148456. Its totient is φ = 219071232.

The previous prime is 239229427. The next prime is 239229493. The reversal of 239229457 is 754922932.

It can be written as a sum of positive squares in 4 ways, for example, as 41011216 + 198218241 = 6404^2 + 14079^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 239229457 - 2¹⁵ = 239196689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (239229427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189538 + ... + 190795.

It is an arithmetic number, because the mean of its divisors is an integer number (32518557).

Almost surely, 2^239229457 is an apocalyptic number.

It is an amenable number.

239229457 is a deficient number, since it is larger than the sum of its proper divisors (20918999).

239229457 is a wasteful number, since it uses less digits than its factorization.

239229457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380387.

The product of its digits is 272160, while the sum is 43.

The square root of 239229457 is about 15467.0442231216. The cubic root of 239229457 is about 620.7807169778.

The spelling of 239229457 in words is "two hundred thirty-nine million, two hundred twenty-nine thousand, four hundred fifty-seven".