43868457 has 6 divisors (see below), whose sum is σ = 63365562. Its totient is φ = 29245632.

The previous prime is 43868453. The next prime is 43868459. The reversal of 43868457 is 75486834.

It can be written as a sum of positive squares in only one way, i.e., 25644096 + 18224361 = 5064^2 + 4269^2 .

It is not a de Polignac number, because 43868457 - 2² = 43868453 is a prime.

It is not an unprimeable number, because it can be changed into a prime (43868453) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2437128 + ... + 2437145.

It is an arithmetic number, because the mean of its divisors is an integer number (10560927).

Almost surely, 2^43868457 is an apocalyptic number.

It is an amenable number.

43868457 is a deficient number, since it is larger than the sum of its proper divisors (19497105).

43868457 is a wasteful number, since it uses less digits than its factorization.

43868457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4874279 (or 4874276 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The square root of 43868457 is about 6623.3267320886. The cubic root of 43868457 is about 352.6826697704.

The spelling of 43868457 in words is "forty-three million, eight hundred sixty-eight thousand, four hundred fifty-seven".