30397956829 has 4 divisors (see below), whose sum is σ = 30406134240. Its totient is φ = 30389779420.

The previous prime is 30397956811. The next prime is 30397956863. The reversal of 30397956829 is 92865979303.

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: 92865979303 = 7121 ⋅13041143.

It is a cyclic number.

It is not a de Polignac number, because 30397956829 - 2⁹ = 30397956317 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 (30397956229) 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, 4083127 + ... + 4090564.

It is an arithmetic number, because the mean of its divisors is an integer number (7601533560).

Almost surely, 2^30397956829 is an apocalyptic number.

It is an amenable number.

30397956829 is a deficient number, since it is larger than the sum of its proper divisors (8177411).

30397956829 is an equidigital number, since it uses as much as digits as its factorization.

30397956829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8177410.

The product of its (nonzero) digits is 22044960, while the sum is 61.

The spelling of 30397956829 in words is "thirty billion, three hundred ninety-seven million, nine hundred fifty-six thousand, eight hundred twenty-nine".