40406001 has 4 divisors (see below), whose sum is σ = 53874672. Its totient is φ = 26937332.

The previous prime is 40405993. The next prime is 40406081. The reversal of 40406001 is 10060404.

40406001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 40406001 - 2³ = 40405993 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40406081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6734331 + ... + 6734336.

It is an arithmetic number, because the mean of its divisors is an integer number (13468668).

Almost surely, 2^40406001 is an apocalyptic number.

It is an amenable number.

40406001 is a deficient number, since it is larger than the sum of its proper divisors (13468671).

40406001 is a wasteful number, since it uses less digits than its factorization.

40406001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13468670.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 40406001 is about 6356.5714815457. The cubic root of 40406001 is about 343.1483830170.

Adding to 40406001 its reverse (10060404), we get a palindrome (50466405).

The spelling of 40406001 in words is "forty million, four hundred six thousand, one".