1489972399 has 2 divisors, whose sum is σ = 1489972400. Its totient is φ = 1489972398.

The previous prime is 1489972391. The next prime is 1489972423. The reversal of 1489972399 is 9932799841.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1489972399 - 2³ = 1489972391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1489972391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 744986199 + 744986200.

It is an arithmetic number, because the mean of its divisors is an integer number (744986200).

Almost surely, 2^1489972399 is an apocalyptic number.

1489972399 is a deficient number, since it is larger than the sum of its proper divisors (1).

1489972399 is an equidigital number, since it uses as much as digits as its factorization.

1489972399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8817984, while the sum is 61.

The square root of 1489972399 is about 38600.1606084742. The cubic root of 1489972399 is about 1142.1577065938.

The spelling of 1489972399 in words is "one billion, four hundred eighty-nine million, nine hundred seventy-two thousand, three hundred ninety-nine".