1494393889 has 4 divisors (see below), whose sum is σ = 1495403056. Its totient is φ = 1493384724.

The previous prime is 1494393853. The next prime is 1494393907. The reversal of 1494393889 is 9883934941.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9883934941 = 31 ⋅318836611.

It is a cyclic number.

It is not a de Polignac number, because 1494393889 - 2²³ = 1486005281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1494393839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 502359 + ... + 505324.

It is an arithmetic number, because the mean of its divisors is an integer number (373850764).

Almost surely, 2^1494393889 is an apocalyptic number.

It is an amenable number.

1494393889 is a deficient number, since it is larger than the sum of its proper divisors (1009167).

1494393889 is a wasteful number, since it uses less digits than its factorization.

1494393889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1009166.

The product of its digits is 6718464, while the sum is 58.

The square root of 1494393889 is about 38657.3911302871. The cubic root of 1494393889 is about 1143.2863744300.

The spelling of 1494393889 in words is "one billion, four hundred ninety-four million, three hundred ninety-three thousand, eight hundred eighty-nine".