43826985 has 24 divisors (see below), whose sum is σ = 76532040. Its totient is φ = 23200512.

The previous prime is 43826971. The next prime is 43826987. The reversal of 43826985 is 58962834.

It can be written as a sum of positive squares in 4 ways, for example, as 1212201 + 42614784 = 1101^2 + 6528^2 .

It is not a de Polignac number, because 43826985 - 2⁵ = 43826953 is a prime.

It is a super-2 number, since 2×43826985² = 3841609228380450, which contains 22 as substring.

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 43826985.

It is not an unprimeable number, because it can be changed into a prime (43826987) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2611 + ... + 9719.

It is an arithmetic number, because the mean of its divisors is an integer number (3188835).

Almost surely, 2^43826985 is an apocalyptic number.

43826985 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

43826985 is a deficient number, since it is larger than the sum of its proper divisors (32705055).

43826985 is a wasteful number, since it uses less digits than its factorization.

43826985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7257 (or 7254 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 43826985 is about 6620.1952388128. The cubic root of 43826985 is about 352.5714959852.

The spelling of 43826985 in words is "forty-three million, eight hundred twenty-six thousand, nine hundred eighty-five".