1240892269 has 2 divisors, whose sum is σ = 1240892270. Its totient is φ = 1240892268.

The previous prime is 1240892249. The next prime is 1240892287. The reversal of 1240892269 is 9622980421.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 964102500 + 276789769 = 31050^2 + 16637^2 .

It is a cyclic number.

It is not a de Polignac number, because 1240892269 - 2¹¹ = 1240890221 is a prime.

It is a super-2 number, since 2×1240892269² = 3079627246527936722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1240892249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620446134 + 620446135.

It is an arithmetic number, because the mean of its divisors is an integer number (620446135).

Almost surely, 2^1240892269 is an apocalyptic number.

It is an amenable number.

1240892269 is a deficient number, since it is larger than the sum of its proper divisors (1).

1240892269 is an equidigital number, since it uses as much as digits as its factorization.

1240892269 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 1240892269 is about 35226.3008134547. The cubic root of 1240892269 is about 1074.5946967495.

The spelling of 1240892269 in words is "one billion, two hundred forty million, eight hundred ninety-two thousand, two hundred sixty-nine".