2129396259 has 4 divisors (see below), whose sum is σ = 2839195016. Its totient is φ = 1419597504.

The previous prime is 2129396233. The next prime is 2129396261. The reversal of 2129396259 is 9526939212.

It is a happy number.

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

It is not a de Polignac number, because 2129396259 - 2¹² = 2129392163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2129396219) 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, 354899374 + ... + 354899379.

It is an arithmetic number, because the mean of its divisors is an integer number (709798754).

Almost surely, 2^2129396259 is an apocalyptic number.

2129396259 is a deficient number, since it is larger than the sum of its proper divisors (709798757).

2129396259 is an equidigital number, since it uses as much as digits as its factorization.

2129396259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 709798756.

The product of its digits is 524880, while the sum is 48.

The square root of 2129396259 is about 46145.3817732609. The cubic root of 2129396259 is about 1286.5267744213.

The spelling of 2129396259 in words is "two billion, one hundred twenty-nine million, three hundred ninety-six thousand, two hundred fifty-nine".