1302309989 has 8 divisors (see below), whose sum is σ = 1418124000. Its totient is φ = 1191223152.

The previous prime is 1302309949. The next prime is 1302310013. The reversal of 1302309989 is 9899032031.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1302309989 is a prime.

It is a super-2 number, since 2×1302309989² = 3392022614898360242, 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 (1302309949) 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, 1181219 + ... + 1182320.

It is an arithmetic number, because the mean of its divisors is an integer number (177265500).

Almost surely, 2^1302309989 is an apocalyptic number.

1302309989 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1302309989 is a deficient number, since it is larger than the sum of its proper divisors (115814011).

1302309989 is a wasteful number, since it uses less digits than its factorization.

1302309989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2363587.

The product of its (nonzero) digits is 104976, while the sum is 44.

The square root of 1302309989 is about 36087.5323207337. The cubic root of 1302309989 is about 1092.0389378723.

The spelling of 1302309989 in words is "one billion, three hundred two million, three hundred nine thousand, nine hundred eighty-nine".