4157864 has 8 divisors (see below), whose sum is σ = 7796010. Its totient is φ = 2078928.

The previous prime is 4157863. The next prime is 4157869. The reversal of 4157864 is 4687514.

It can be written as a sum of positive squares in only one way, i.e., 3724900 + 432964 = 1930^2 + 658^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (4157863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 259859 + ... + 259874.

Almost surely, 2^4157864 is an apocalyptic number.

It is an amenable number.

4157864 is a deficient number, since it is larger than the sum of its proper divisors (3638146).

4157864 is a wasteful number, since it uses less digits than its factorization.

4157864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519739 (or 519735 counting only the distinct ones).

The product of its digits is 26880, while the sum is 35.

The square root of 4157864 is about 2039.0841081231. The cubic root of 4157864 is about 160.8014991238.

The spelling of 4157864 in words is "four million, one hundred fifty-seven thousand, eight hundred sixty-four".