30398709749 has 8 divisors (see below), whose sum is σ = 32226669720. Its totient is φ = 28575172096.

The previous prime is 30398709743. The next prime is 30398709751. The reversal of 30398709749 is 94790789303.

It can be written as a sum of positive squares in 4 ways, for example, as 6807900100 + 23590809649 = 82510^2 + 153593^2 .

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-30398709749 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 (30398709743) 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, 1091414 + ... + 1118919.

It is an arithmetic number, because the mean of its divisors is an integer number (4028333715).

Almost surely, 2^30398709749 is an apocalyptic number.

It is an amenable number.

30398709749 is a deficient number, since it is larger than the sum of its proper divisors (1827959971).

30398709749 is a wasteful number, since it uses less digits than its factorization.

30398709749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2211159.

The product of its (nonzero) digits is 10287648, while the sum is 59.

The spelling of 30398709749 in words is "thirty billion, three hundred ninety-eight million, seven hundred nine thousand, seven hundred forty-nine".