240857969 has 4 divisors (see below), whose sum is σ = 262754160. Its totient is φ = 218961780.

The previous prime is 240857959. The next prime is 240857983. The reversal of 240857969 is 969758042.

It is a happy number.

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-240857969 is a prime.

It is a super-2 number, since 2×240857969² = 116025122461609922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (240857959) 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, 10948079 + ... + 10948100.

It is an arithmetic number, because the mean of its divisors is an integer number (65688540).

Almost surely, 2^240857969 is an apocalyptic number.

It is an amenable number.

240857969 is a deficient number, since it is larger than the sum of its proper divisors (21896191).

240857969 is a wasteful number, since it uses less digits than its factorization.

240857969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21896190.

The product of its (nonzero) digits is 1088640, while the sum is 50.

The square root of 240857969 is about 15519.5995115853. The cubic root of 240857969 is about 622.1861508296.

The spelling of 240857969 in words is "two hundred forty million, eight hundred fifty-seven thousand, nine hundred sixty-nine".