4157869 has 2 divisors, whose sum is σ = 4157870. Its totient is φ = 4157868.

The previous prime is 4157863. The next prime is 4157887. The reversal of 4157869 is 9687514.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3496900 + 660969 = 1870^2 + 813^2 .

It is a cyclic number.

It is not a de Polignac number, because 4157869 - 2⁵ = 4157837 is a prime.

It is a super-2 number, since 2×4157869² = 34575749242322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4157863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2078934 + 2078935.

It is an arithmetic number, because the mean of its divisors is an integer number (2078935).

Almost surely, 2^4157869 is an apocalyptic number.

It is an amenable number.

4157869 is a deficient number, since it is larger than the sum of its proper divisors (1).

4157869 is an equidigital number, since it uses as much as digits as its factorization.

4157869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 40.

The square root of 4157869 is about 2039.0853341633. The cubic root of 4157869 is about 160.8015635806.

The spelling of 4157869 in words is "four million, one hundred fifty-seven thousand, eight hundred sixty-nine".