240409973 has 2 divisors, whose sum is σ = 240409974. Its totient is φ = 240409972.

The previous prime is 240409963. The next prime is 240409987. The reversal of 240409973 is 379904042.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 240312004 + 97969 = 15502^2 + 313^2 .

It is a cyclic number.

It is not a de Polignac number, because 240409973 - 2¹² = 240405877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240409963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120204986 + 120204987.

It is an arithmetic number, because the mean of its divisors is an integer number (120204987).

Almost surely, 2^240409973 is an apocalyptic number.

It is an amenable number.

240409973 is a deficient number, since it is larger than the sum of its proper divisors (1).

240409973 is an equidigital number, since it uses as much as digits as its factorization.

240409973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 240409973 is about 15505.1595606108. The cubic root of 240409973 is about 621.8001558471.

The spelling of 240409973 in words is "two hundred forty million, four hundred nine thousand, nine hundred seventy-three".