1202989439 has 2 divisors, whose sum is σ = 1202989440. Its totient is φ = 1202989438.

The previous prime is 1202989391. The next prime is 1202989453. The reversal of 1202989439 is 9349892021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1202989439 - 2¹⁶ = 1202923903 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1202989393 and 1202989402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1202989499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601494719 + 601494720.

It is an arithmetic number, because the mean of its divisors is an integer number (601494720).

Almost surely, 2^1202989439 is an apocalyptic number.

1202989439 is a deficient number, since it is larger than the sum of its proper divisors (1).

1202989439 is an equidigital number, since it uses as much as digits as its factorization.

1202989439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 279936, while the sum is 47.

The square root of 1202989439 is about 34684.1381469974. The cubic root of 1202989439 is about 1063.5402688050.

The spelling of 1202989439 in words is "one billion, two hundred two million, nine hundred eighty-nine thousand, four hundred thirty-nine".