1490989727 has 2 divisors, whose sum is σ = 1490989728. Its totient is φ = 1490989726.

The previous prime is 1490989699. The next prime is 1490989729. The reversal of 1490989727 is 7279890941.

It is a strong prime.

It is an emirp because it is prime and its reverse (7279890941) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1490989727 - 2¹² = 1490985631 is a prime.

Together with 1490989729, 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 (1490989729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 745494863 + 745494864.

It is an arithmetic number, because the mean of its divisors is an integer number (745494864).

Almost surely, 2^1490989727 is an apocalyptic number.

1490989727 is a deficient number, since it is larger than the sum of its proper divisors (1).

1490989727 is an equidigital number, since it uses as much as digits as its factorization.

1490989727 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2286144, while the sum is 56.

The square root of 1490989727 is about 38613.3361288558. The cubic root of 1490989727 is about 1142.4175961201.

The spelling of 1490989727 in words is "one billion, four hundred ninety million, nine hundred eighty-nine thousand, seven hundred twenty-seven".