1269484139 has 16 divisors (see below), whose sum is σ = 1588916736. Its totient is φ = 985344000.

The previous prime is 1269484127. The next prime is 1269484159. The reversal of 1269484139 is 9314849621.

It is a cyclic number.

It is not a de Polignac number, because 1269484139 - 2⁴ = 1269484123 is a prime.

It is a super-2 number, since 2×1269484139² = 3223179958345142642, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1269484093 and 1269484102.

It is not an unprimeable number, because it can be changed into a prime (1269484159) 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 in 15 ways as a sum of consecutive naturals, for example, 12287 + ... + 51864.

It is an arithmetic number, because the mean of its divisors is an integer number (99307296).

Almost surely, 2^1269484139 is an apocalyptic number.

1269484139 is a deficient number, since it is larger than the sum of its proper divisors (319432597).

1269484139 is a wasteful number, since it uses less digits than its factorization.

1269484139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64426.

The product of its digits is 373248, while the sum is 47.

The square root of 1269484139 is about 35629.8209229292. The cubic root of 1269484139 is about 1082.7854876592.

The spelling of 1269484139 in words is "one billion, two hundred sixty-nine million, four hundred eighty-four thousand, one hundred thirty-nine".