4157897839 has 2 divisors, whose sum is σ = 4157897840. Its totient is φ = 4157897838.

The previous prime is 4157897837. The next prime is 4157897879. The reversal of 4157897839 is 9387987514.

4157897839 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4157897839 - 2¹ = 4157897837 is a prime.

It is a super-2 number, since 2×4157897839² = 34576228879121739842, which contains 22 as substring.

Together with 4157897837, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4157897837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2078948919 + 2078948920.

It is an arithmetic number, because the mean of its divisors is an integer number (2078948920).

Almost surely, 2^4157897839 is an apocalyptic number.

4157897839 is a deficient number, since it is larger than the sum of its proper divisors (1).

4157897839 is an equidigital number, since it uses as much as digits as its factorization.

4157897839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15240960, while the sum is 61.

The square root of 4157897839 is about 64481.7636157697. The cubic root of 4157897839 is about 1608.0193535320.

The spelling of 4157897839 in words is "four billion, one hundred fifty-seven million, eight hundred ninety-seven thousand, eight hundred thirty-nine".