2051335439 has 2 divisors, whose sum is σ = 2051335440. Its totient is φ = 2051335438.

The previous prime is 2051335427. The next prime is 2051335487. The reversal of 2051335439 is 9345331502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2051335439 - 2¹² = 2051331343 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2051335399 and 2051335408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2051335639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1025667719 + 1025667720.

It is an arithmetic number, because the mean of its divisors is an integer number (1025667720).

Almost surely, 2^2051335439 is an apocalyptic number.

2051335439 is a deficient number, since it is larger than the sum of its proper divisors (1).

2051335439 is an equidigital number, since it uses as much as digits as its factorization.

2051335439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48600, while the sum is 35.

The square root of 2051335439 is about 45291.6707463966. The cubic root of 2051335439 is about 1270.6098790242.

The spelling of 2051335439 in words is "two billion, fifty-one million, three hundred thirty-five thousand, four hundred thirty-nine".