1479339989 has 4 divisors (see below), whose sum is σ = 1479421056. Its totient is φ = 1479258924.

The previous prime is 1479339977. The next prime is 1479339997. The reversal of 1479339989 is 9899339741.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9899339741 = 173 ⋅57221617.

It is a cyclic number.

It is not a de Polignac number, because 1479339989 - 2⁸ = 1479339733 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 (1479339689) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1082 + ... + 54404.

It is an arithmetic number, because the mean of its divisors is an integer number (369855264).

Almost surely, 2^1479339989 is an apocalyptic number.

It is an amenable number.

1479339989 is a deficient number, since it is larger than the sum of its proper divisors (81067).

1479339989 is an equidigital number, since it uses as much as digits as its factorization.

1479339989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81066.

The product of its digits is 13226976, while the sum is 62.

The square root of 1479339989 is about 38462.1890822662. The cubic root of 1479339989 is about 1139.4344144782.

The spelling of 1479339989 in words is "one billion, four hundred seventy-nine million, three hundred thirty-nine thousand, nine hundred eighty-nine".