1204413989 has 2 divisors, whose sum is σ = 1204413990. Its totient is φ = 1204413988.

The previous prime is 1204413941. The next prime is 1204414031. The reversal of 1204413989 is 9893144021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 717329089 + 487084900 = 26783^2 + 22070^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1204413989 is a prime.

It is a super-2 number, since 2×1204413989² = 2901226113797784242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1204413919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 602206994 + 602206995.

It is an arithmetic number, because the mean of its divisors is an integer number (602206995).

Almost surely, 2^1204413989 is an apocalyptic number.

It is an amenable number.

1204413989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1204413989 is an equidigital number, since it uses as much as digits as its factorization.

1204413989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 1204413989 is about 34704.6681153991. The cubic root of 1204413989 is about 1063.9599091330.

The spelling of 1204413989 in words is "one billion, two hundred four million, four hundred thirteen thousand, nine hundred eighty-nine".