40016001 has 4 divisors (see below), whose sum is σ = 53354672. Its totient is φ = 26677332.

The previous prime is 40015999. The next prime is 40016051. The reversal of 40016001 is 10061004.

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 not a de Polignac number, because 40016001 - 2¹ = 40015999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40016051) 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, 6669331 + ... + 6669336.

It is an arithmetic number, because the mean of its divisors is an integer number (13338668).

Almost surely, 2^40016001 is an apocalyptic number.

It is an amenable number.

40016001 is a deficient number, since it is larger than the sum of its proper divisors (13338671).

40016001 is a wasteful number, since it uses less digits than its factorization.

40016001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13338670.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 40016001 is about 6325.8201839761. The cubic root of 40016001 is about 342.0407854646.

Adding to 40016001 its reverse (10061004), we get a palindrome (50077005).

The spelling of 40016001 in words is "forty million, sixteen thousand, one".