239263897 has 4 divisors (see below), whose sum is σ = 240985360. Its totient is φ = 237542436.

The previous prime is 239263883. The next prime is 239263907. The reversal of 239263897 is 798362932.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-239263897 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 239263897.

It is not an unprimeable number, because it can be changed into a prime (239063897) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 860523 + ... + 860800.

It is an arithmetic number, because the mean of its divisors is an integer number (60246340).

Almost surely, 2^239263897 is an apocalyptic number.

It is an amenable number.

239263897 is a deficient number, since it is larger than the sum of its proper divisors (1721463).

239263897 is a wasteful number, since it uses less digits than its factorization.

239263897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1721462.

The product of its digits is 979776, while the sum is 49.

The square root of 239263897 is about 15468.1575179463. The cubic root of 239263897 is about 620.8105052019.

The spelling of 239263897 in words is "two hundred thirty-nine million, two hundred sixty-three thousand, eight hundred ninety-seven".