40040670 has 32 divisors (see below), whose sum is σ = 96744960. Its totient is φ = 10605600.

The previous prime is 40040669. The next prime is 40040681. The reversal of 40040670 is 7604004.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111 + ... + 8949.

It is an arithmetic number, because the mean of its divisors is an integer number (3023280).

Almost surely, 2^40040670 is an apocalyptic number.

40040670 is an abundant number, since it is smaller than the sum of its proper divisors (56704290).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40040670 is a wasteful number, since it uses less digits than its factorization.

40040670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9000.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 40040670 is about 6327.7697492877. The cubic root of 40040670 is about 342.1110579440. Note that the first 3 decimals are identical.

Adding to 40040670 its reverse (7604004), we get a palindrome (47644674).

The spelling of 40040670 in words is "forty million, forty thousand, six hundred seventy".