240439973 has 2 divisors, whose sum is σ = 240439974. Its totient is φ = 240439972.

The previous prime is 240439963. The next prime is 240439981. The reversal of 240439973 is 379934042.

240439973 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 224940004 + 15499969 = 14998^2 + 3937^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-240439973 is a prime.

It is a super-2 number, since 2×240439973² = 115622761232481458, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 240439973.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240439933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120219986 + 120219987.

It is an arithmetic number, because the mean of its divisors is an integer number (120219987).

Almost surely, 2^240439973 is an apocalyptic number.

It is an amenable number.

240439973 is a deficient number, since it is larger than the sum of its proper divisors (1).

240439973 is an equidigital number, since it uses as much as digits as its factorization.

240439973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 41.

The square root of 240439973 is about 15506.1269503381. The cubic root of 240439973 is about 621.8260189295.

The spelling of 240439973 in words is "two hundred forty million, four hundred thirty-nine thousand, nine hundred seventy-three".