40380001 has 4 divisors (see below), whose sum is σ = 40400404. Its totient is φ = 40359600.

The previous prime is 40379993. The next prime is 40380037. The reversal of 40380001 is 10008304.

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 33872400 + 6507601 = 5820^2 + 2551^2 .

It is a cyclic number.

It is not a de Polignac number, because 40380001 - 2³ = 40379993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40380091) 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, 6870 + ... + 11311.

It is an arithmetic number, because the mean of its divisors is an integer number (10100101).

Almost surely, 2^40380001 is an apocalyptic number.

It is an amenable number.

40380001 is a deficient number, since it is larger than the sum of its proper divisors (20403).

40380001 is a wasteful number, since it uses less digits than its factorization.

40380001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20402.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 40380001 is about 6354.5260248110. The cubic root of 40380001 is about 343.0747654679.

Adding to 40380001 its reverse (10008304), we get a palindrome (50388305).

The spelling of 40380001 in words is "forty million, three hundred eighty thousand, one".