43740001 has 4 divisors (see below), whose sum is σ = 43960000. Its totient is φ = 43520004.

The previous prime is 43739953. The next prime is 43740007. The reversal of 43740001 is 10004734.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 43740001 - 2⁹ = 43739489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43740007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109701 + ... + 110098.

It is an arithmetic number, because the mean of its divisors is an integer number (10990000).

Almost surely, 2^43740001 is an apocalyptic number.

It is an amenable number.

43740001 is a deficient number, since it is larger than the sum of its proper divisors (219999).

43740001 is a wasteful number, since it uses less digits than its factorization.

43740001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219998.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 43740001 is about 6613.6223811161. The cubic root of 43740001 is about 352.3380903903.

Adding to 43740001 its reverse (10004734), we get a palindrome (53744735).

The spelling of 43740001 in words is "forty-three million, seven hundred forty thousand, one".