1308989 has 8 divisors (see below), whose sum is σ = 1440768. Its totient is φ = 1179360.

The previous prime is 1308977. The next prime is 1309013. The reversal of 1308989 is 9898031.

1308989 = T₂₆₅ + T₂₆₆ + ... + T₂₉₇.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1308989 - 2¹² = 1304893 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 (1308919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 929 + ... + 1865.

It is an arithmetic number, because the mean of its divisors is an integer number (180096).

2^1308989 is an apocalyptic number.

It is an amenable number.

1308989 is a deficient number, since it is larger than the sum of its proper divisors (131779).

1308989 is a wasteful number, since it uses less digits than its factorization.

1308989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1075.

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 1308989 is about 1144.1105715795. The cubic root of 1308989 is about 109.3902627952.

It can be divided in two parts, 130 and 8989, that added together give a palindrome (9119).

The spelling of 1308989 in words is "one million, three hundred eight thousand, nine hundred eighty-nine".