43406361 has 12 divisors (see below), whose sum is σ = 65020592. Its totient is φ = 28937412.

The previous prime is 43406357. The next prime is 43406371. The reversal of 43406361 is 16360434.

It is not a de Polignac number, because 43406361 - 2² = 43406357 is a prime.

It is a super-2 number, since 2×43406361² = 3768224350524642, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43406371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 89071 + ... + 89556.

Almost surely, 2^43406361 is an apocalyptic number.

It is an amenable number.

43406361 is a deficient number, since it is larger than the sum of its proper divisors (21614231).

43406361 is an equidigital number, since it uses as much as digits as its factorization.

43406361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178642 (or 178630 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 43406361 is about 6588.3504005176. The cubic root of 43406361 is about 351.4399480043.

Adding to 43406361 its reverse (16360434), we get a palindrome (59766795).

It can be divided in two parts, 4340 and 6361, that added together give a palindrome (10701).

The spelling of 43406361 in words is "forty-three million, four hundred six thousand, three hundred sixty-one".