1493989 has 16 divisors (see below), whose sum is σ = 1843200. Its totient is φ = 1182384.

The previous prime is 1493981. The next prime is 1494019. The reversal of 1493989 is 9893941.

It is not a de Polignac number, because 1493989 - 2³ = 1493981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1493981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6132 + ... + 6370.

It is an arithmetic number, because the mean of its divisors is an integer number (115200).

2^1493989 is an apocalyptic number.

1493989 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1493989 is a deficient number, since it is larger than the sum of its proper divisors (349211).

1493989 is a wasteful number, since it uses less digits than its factorization.

1493989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312.

The product of its digits is 69984, while the sum is 43.

The square root of 1493989 is about 1222.2884274998. The cubic root of 1493989 is about 114.3183111631.

The spelling of 1493989 in words is "one million, four hundred ninety-three thousand, nine hundred eighty-nine".