2129260394 has 4 divisors (see below), whose sum is σ = 3193890594. Its totient is φ = 1064630196.

The previous prime is 2129260363. The next prime is 2129260459. The reversal of 2129260394 is 4930629212.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 1929405625 + 199854769 = 43925^2 + 14137^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 532315097 + ... + 532315100.

Almost surely, 2^2129260394 is an apocalyptic number.

2129260394 is a deficient number, since it is larger than the sum of its proper divisors (1064630200).

2129260394 is a wasteful number, since it uses less digits than its factorization.

2129260394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064630199.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 2129260394 is about 46143.9096089614. The cubic root of 2129260394 is about 1286.4994117863.

The spelling of 2129260394 in words is "two billion, one hundred twenty-nine million, two hundred sixty thousand, three hundred ninety-four".