1234909900249 has 2 divisors, whose sum is σ = 1234909900250. Its totient is φ = 1234909900248.

The previous prime is 1234909900219. The next prime is 1234909900307. The reversal of 1234909900249 is 9420099094321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1213231755024 + 21678145225 = 1101468^2 + 147235^2 .

It is a cyclic number.

It is not a de Polignac number, because 1234909900249 - 2¹⁵ = 1234909867481 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1234909900196 and 1234909900205.

It is not a weakly prime, because it can be changed into another prime (1234909900219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 617454950124 + 617454950125.

It is an arithmetic number, because the mean of its divisors is an integer number (617454950125).

Almost surely, 2^{1234909900249} is an apocalyptic number.

It is an amenable number.

1234909900249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1234909900249 is an equidigital number, since it uses as much as digits as its factorization.

1234909900249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1259712, while the sum is 52.

The spelling of 1234909900249 in words is "one trillion, two hundred thirty-four billion, nine hundred nine million, nine hundred thousand, two hundred forty-nine".