40015001 has 16 divisors (see below), whose sum is σ = 44620800. Its totient is φ = 35650368.

The previous prime is 40014977. The next prime is 40015049. The reversal of 40015001 is 10051004.

It is a de Polignac number, because none of the positive numbers 2^k-40015001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40015081) 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 15 ways as a sum of consecutive naturals, for example, 47855 + ... + 48683.

It is an arithmetic number, because the mean of its divisors is an integer number (2788800).

Almost surely, 2^40015001 is an apocalyptic number.

It is an amenable number.

40015001 is a deficient number, since it is larger than the sum of its proper divisors (4605799).

40015001 is a wasteful number, since it uses less digits than its factorization.

40015001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968.

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 40015001 is about 6325.7411423485. The cubic root of 40015001 is about 342.0379362407.

Adding to 40015001 its reverse (10051004), we get a palindrome (50066005).

The spelling of 40015001 in words is "forty million, fifteen thousand, one".