240397 has 8 divisors (see below), whose sum is σ = 259200. Its totient is φ = 222144.

The previous prime is 240379. The next prime is 240421. The reversal of 240397 is 793042.

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 240397 - 2¹⁵ = 207629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1254 + ... + 1432.

It is an arithmetic number, because the mean of its divisors is an integer number (32400).

2²⁴⁰³⁹⁷ is an apocalyptic number.

It is an amenable number.

240397 is a deficient number, since it is larger than the sum of its proper divisors (18803).

240397 is a wasteful number, since it uses less digits than its factorization.

240397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 240397 is about 490.3029675619. The cubic root of 240397 is about 62.1788971122.

It can be divided in two parts, 2403 and 97, that added together give a square (2500 = 50²).

The spelling of 240397 in words is "two hundred forty thousand, three hundred ninety-seven".