240689082947 has 2 divisors, whose sum is σ = 240689082948. Its totient is φ = 240689082946.

The previous prime is 240689082941. The next prime is 240689082961. The reversal of 240689082947 is 749280986042.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-240689082947 is a prime.

It is a super-3 number, since 3×240689082947³ (a number of 35 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (240689082941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120344541473 + 120344541474.

It is an arithmetic number, because the mean of its divisors is an integer number (120344541474).

Almost surely, 2^240689082947 is an apocalyptic number.

240689082947 is a deficient number, since it is larger than the sum of its proper divisors (1).

240689082947 is an equidigital number, since it uses as much as digits as its factorization.

240689082947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13934592, while the sum is 59.

The spelling of 240689082947 in words is "two hundred forty billion, six hundred eighty-nine million, eighty-two thousand, nine hundred forty-seven".