40080646 has 4 divisors (see below), whose sum is σ = 60120972. Its totient is φ = 20040322.

The previous prime is 40080643. The next prime is 40080653. The reversal of 40080646 is 64608004.

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

It is a super-3 number, since 3×40080646³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40080641) 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 as a sum of consecutive naturals, namely, 10020160 + ... + 10020163.

It is an arithmetic number, because the mean of its divisors is an integer number (15030243).

Almost surely, 2^40080646 is an apocalyptic number.

40080646 is a deficient number, since it is larger than the sum of its proper divisors (20040326).

40080646 is a wasteful number, since it uses less digits than its factorization.

40080646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20040325.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 40080646 is about 6330.9277361221. The cubic root of 40080646 is about 342.2248729126.

The spelling of 40080646 in words is "forty million, eighty thousand, six hundred forty-six".