40343870 has 16 divisors (see below), whose sum is σ = 82993248. Its totient is φ = 13832160.

The previous prime is 40343869. The next prime is 40343879. The reversal of 40343870 is 7834304.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40343879) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 288101 + ... + 288240.

It is an arithmetic number, because the mean of its divisors is an integer number (5187078).

Almost surely, 2^40343870 is an apocalyptic number.

40343870 is an abundant number, since it is smaller than the sum of its proper divisors (42649378).

40343870 is a wasteful number, since it uses less digits than its factorization.

40343870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576355.

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 40343870 is about 6351.6824542793. The cubic root of 40343870 is about 342.9724100693.

The spelling of 40343870 in words is "forty million, three hundred forty-three thousand, eight hundred seventy".