29897394019 has 4 divisors (see below), whose sum is σ = 30592682296. Its totient is φ = 29202105744.

The previous prime is 29897394017. The next prime is 29897394073. The reversal of 29897394019 is 91049379892.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 29897394019 - 2¹ = 29897394017 is a prime.

It is a super-2 number, since 2×29897394019² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29897394011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 347644074 + ... + 347644159.

It is an arithmetic number, because the mean of its divisors is an integer number (7648170574).

Almost surely, 2^29897394019 is an apocalyptic number.

29897394019 is a deficient number, since it is larger than the sum of its proper divisors (695288277).

29897394019 is an equidigital number, since it uses as much as digits as its factorization.

29897394019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695288276.

The product of its (nonzero) digits is 8817984, while the sum is 61.

The spelling of 29897394019 in words is "twenty-nine billion, eight hundred ninety-seven million, three hundred ninety-four thousand, nineteen".