1234909969 has 2 divisors, whose sum is σ = 1234909970. Its totient is φ = 1234909968.

The previous prime is 1234909961. The next prime is 1234909979. The reversal of 1234909969 is 9699094321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1012512400 + 222397569 = 31820^2 + 14913^2 .

It is a cyclic number.

It is not a de Polignac number, because 1234909969 - 2³ = 1234909961 is a prime.

It is a super-2 number, since 2×1234909969² = 3050005263071161922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1234909961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 617454984 + 617454985.

It is an arithmetic number, because the mean of its divisors is an integer number (617454985).

Almost surely, 2^1234909969 is an apocalyptic number.

It is an amenable number.

1234909969 is a deficient number, since it is larger than the sum of its proper divisors (1).

1234909969 is an equidigital number, since it uses as much as digits as its factorization.

1234909969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 944784, while the sum is 52.

The square root of 1234909969 is about 35141.2858188200. The cubic root of 1234909969 is about 1072.8650525847.

The spelling of 1234909969 in words is "one billion, two hundred thirty-four million, nine hundred nine thousand, nine hundred sixty-nine".