1244246669 has 4 divisors (see below), whose sum is σ = 1244738496. Its totient is φ = 1243754844.

The previous prime is 1244246657. The next prime is 1244246683. The reversal of 1244246669 is 9666424421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9666424421 = 41143 ⋅234947.

It is a cyclic number.

It is not a de Polignac number, because 1244246669 - 2⁸ = 1244246413 is a prime.

It is a super-2 number, since 2×1244246669² = 3096299546635191122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244246629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 242099 + ... + 247184.

It is an arithmetic number, because the mean of its divisors is an integer number (311184624).

Almost surely, 2^1244246669 is an apocalyptic number.

It is an amenable number.

1244246669 is a deficient number, since it is larger than the sum of its proper divisors (491827).

1244246669 is an equidigital number, since it uses as much as digits as its factorization.

1244246669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491826.

The product of its digits is 497664, while the sum is 44.

The square root of 1244246669 is about 35273.8808327068. The cubic root of 1244246669 is about 1075.5621128009.

The spelling of 1244246669 in words is "one billion, two hundred forty-four million, two hundred forty-six thousand, six hundred sixty-nine".