40396001 has 4 divisors (see below), whose sum is σ = 40430100. Its totient is φ = 40361904.

The previous prime is 40395991. The next prime is 40396009. The reversal of 40396001 is 10069304.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 33918976 + 6477025 = 5824^2 + 2545^2 .

It is a cyclic number.

It is not a de Polignac number, because 40396001 - 2¹⁸ = 40133857 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40396009) 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 3 ways as a sum of consecutive naturals, for example, 15206 + ... + 17663.

It is an arithmetic number, because the mean of its divisors is an integer number (10107525).

Almost surely, 2^40396001 is an apocalyptic number.

It is an amenable number.

40396001 is a deficient number, since it is larger than the sum of its proper divisors (34099).

40396001 is a wasteful number, since it uses less digits than its factorization.

40396001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34098.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 40396001 is about 6355.7848453200. The cubic root of 40396001 is about 343.1200723134.

The spelling of 40396001 in words is "forty million, three hundred ninety-six thousand, one".