1489972247 has 2 divisors, whose sum is σ = 1489972248. Its totient is φ = 1489972246.

The previous prime is 1489972243. The next prime is 1489972249. The reversal of 1489972247 is 7422799841.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1489972247 - 2² = 1489972243 is a prime.

Together with 1489972249, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1489972243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 744986123 + 744986124.

It is an arithmetic number, because the mean of its divisors is an integer number (744986124).

Almost surely, 2^1489972247 is an apocalyptic number.

1489972247 is a deficient number, since it is larger than the sum of its proper divisors (1).

1489972247 is an equidigital number, since it uses as much as digits as its factorization.

1489972247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2032128, while the sum is 53.

The square root of 1489972247 is about 38600.1586395704. The cubic root of 1489972247 is about 1142.1576677547.

The spelling of 1489972247 in words is "one billion, four hundred eighty-nine million, nine hundred seventy-two thousand, two hundred forty-seven".