43868385 has 80 divisors (see below), whose sum is σ = 88165440. Its totient is φ = 20684160.

The previous prime is 43868371. The next prime is 43868393. The reversal of 43868385 is 58386834.

It is not a de Polignac number, because 43868385 - 2¹¹ = 43866337 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 43868385.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 191451 + ... + 191679.

It is an arithmetic number, because the mean of its divisors is an integer number (1102068).

Almost surely, 2^43868385 is an apocalyptic number.

43868385 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

43868385 is an abundant number, since it is smaller than the sum of its proper divisors (44297055).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

43868385 is a wasteful number, since it uses less digits than its factorization.

43868385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300 (or 291 counting only the distinct ones).

The product of its digits is 552960, while the sum is 45.

The square root of 43868385 is about 6623.3212967514. The cubic root of 43868385 is about 352.6824768211.

It can be divided in two parts, 43868 and 385, that added together give a triangular number (44253 = T₂₉₇).

The spelling of 43868385 in words is "forty-three million, eight hundred sixty-eight thousand, three hundred eighty-five".