1490489789 has 4 divisors (see below), whose sum is σ = 1568936640. Its totient is φ = 1412042940.

The previous prime is 1490489731. The next prime is 1490489813. The reversal of 1490489789 is 9879840941.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1490489789 - 2²⁴ = 1473712573 is a prime.

It is a super-2 number, since 2×1490489789² = 4443119622226529042, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1490489729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39223397 + ... + 39223434.

It is an arithmetic number, because the mean of its divisors is an integer number (392234160).

Almost surely, 2^1490489789 is an apocalyptic number.

1490489789 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1490489789 is a deficient number, since it is larger than the sum of its proper divisors (78446851).

1490489789 is an equidigital number, since it uses as much as digits as its factorization.

1490489789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78446850.

The product of its (nonzero) digits is 5225472, while the sum is 59.

The square root of 1490489789 is about 38606.8619418880. The cubic root of 1490489789 is about 1142.2898953038.

The spelling of 1490489789 in words is "one billion, four hundred ninety million, four hundred eighty-nine thousand, seven hundred eighty-nine".