240199969 has 2 divisors, whose sum is σ = 240199970. Its totient is φ = 240199968.

The previous prime is 240199963. The next prime is 240200039. The reversal of 240199969 is 969991042.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 233722944 + 6477025 = 15288^2 + 2545^2 .

It is a cyclic number.

It is not a de Polignac number, because 240199969 - 2²¹ = 238102817 is a prime.

It is a super-2 number, since 2×240199969² = 115392050215201922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (240199963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120099984 + 120099985.

It is an arithmetic number, because the mean of its divisors is an integer number (120099985).

Almost surely, 2^240199969 is an apocalyptic number.

It is an amenable number.

240199969 is a deficient number, since it is larger than the sum of its proper divisors (1).

240199969 is an equidigital number, since it uses as much as digits as its factorization.

240199969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 314928, while the sum is 49.

The square root of 240199969 is about 15498.3860127434. The cubic root of 240199969 is about 621.6190505481.

The spelling of 240199969 in words is "two hundred forty million, one hundred ninety-nine thousand, nine hundred sixty-nine".