2129954347 has 12 divisors (see below), whose sum is σ = 2173782096. Its totient is φ = 2086592480.

The previous prime is 2129954291. The next prime is 2129954363. The reversal of 2129954347 is 7434599212.

It is not a de Polignac number, because 2129954347 - 2¹⁹ = 2129430059 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2129954297 and 2129954306.

It is not an unprimeable number, because it can be changed into a prime (2129954147) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2755053 + ... + 2755825.

It is an arithmetic number, because the mean of its divisors is an integer number (181148508).

Almost surely, 2^2129954347 is an apocalyptic number.

2129954347 is a deficient number, since it is larger than the sum of its proper divisors (43827749).

2129954347 is an frugal number, since it uses more digits than its factorization.

2129954347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1238 (or 1041 counting only the distinct ones).

The product of its digits is 544320, while the sum is 46.

The square root of 2129954347 is about 46151.4284394319. The cubic root of 2129954347 is about 1286.6391587704.

The spelling of 2129954347 in words is "two billion, one hundred twenty-nine million, nine hundred fifty-four thousand, three hundred forty-seven".