2057199439 has 4 divisors (see below), whose sum is σ = 2057416560. Its totient is φ = 2056982320.

The previous prime is 2057199409. The next prime is 2057199457. The reversal of 2057199439 is 9349917502.

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 2057199439 - 2¹³ = 2057191247 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2057199392 and 2057199401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2057199409) 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, 93667 + ... + 113524.

It is an arithmetic number, because the mean of its divisors is an integer number (514354140).

Almost surely, 2^2057199439 is an apocalyptic number.

2057199439 is a deficient number, since it is larger than the sum of its proper divisors (217121).

2057199439 is an equidigital number, since it uses as much as digits as its factorization.

2057199439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217120.

The product of its (nonzero) digits is 612360, while the sum is 49.

The square root of 2057199439 is about 45356.3605131629. The cubic root of 2057199439 is about 1271.8194598184.

The spelling of 2057199439 in words is "two billion, fifty-seven million, one hundred ninety-nine thousand, four hundred thirty-nine".