1204339889 has 2 divisors, whose sum is σ = 1204339890. Its totient is φ = 1204339888.

The previous prime is 1204339883. The next prime is 1204339907. The reversal of 1204339889 is 9889334021.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 886074289 + 318265600 = 29767^2 + 17840^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1204339889 is a prime.

It is not a weakly prime, because it can be changed into another prime (1204339883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 602169944 + 602169945.

It is an arithmetic number, because the mean of its divisors is an integer number (602169945).

Almost surely, 2^1204339889 is an apocalyptic number.

It is an amenable number.

1204339889 is a deficient number, since it is larger than the sum of its proper divisors (1).

1204339889 is an equidigital number, since it uses as much as digits as its factorization.

1204339889 is an evil number, because the sum of its binary digits is even.

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

The square root of 1204339889 is about 34703.6005192545. The cubic root of 1204339889 is about 1063.9380891036.

The spelling of 1204339889 in words is "one billion, two hundred four million, three hundred thirty-nine thousand, eight hundred eighty-nine".