1489856477 has 2 divisors, whose sum is σ = 1489856478. Its totient is φ = 1489856476.

The previous prime is 1489856453. The next prime is 1489856491. The reversal of 1489856477 is 7746589841.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 778354201 + 711502276 = 27899^2 + 26674^2 .

It is a cyclic number.

It is not a de Polignac number, because 1489856477 - 2⁶ = 1489856413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1489856677) 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, 744928238 + 744928239.

It is an arithmetic number, because the mean of its divisors is an integer number (744928239).

Almost surely, 2^1489856477 is an apocalyptic number.

It is an amenable number.

1489856477 is a deficient number, since it is larger than the sum of its proper divisors (1).

1489856477 is an equidigital number, since it uses as much as digits as its factorization.

1489856477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13547520, while the sum is 59.

The square root of 1489856477 is about 38598.6590052038. The cubic root of 1489856477 is about 1142.1280853204.

The spelling of 1489856477 in words is "one billion, four hundred eighty-nine million, eight hundred fifty-six thousand, four hundred seventy-seven".