40740785 has 16 divisors (see below), whose sum is σ = 49704192. Its totient is φ = 32054400.

The previous prime is 40740781. The next prime is 40740787. The reversal of 40740785 is 58704704.

It is a happy number.

It is not a de Polignac number, because 40740785 - 2² = 40740781 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40740781) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144845 + ... + 145125.

It is an arithmetic number, because the mean of its divisors is an integer number (3106512).

Almost surely, 2^40740785 is an apocalyptic number.

It is an amenable number.

40740785 is a deficient number, since it is larger than the sum of its proper divisors (8963407).

40740785 is a wasteful number, since it uses less digits than its factorization.

40740785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664.

The product of its (nonzero) digits is 31360, while the sum is 35.

The square root of 40740785 is about 6382.8508520880. The cubic root of 40740785 is about 344.0934964223.

The spelling of 40740785 in words is "forty million, seven hundred forty thousand, seven hundred eighty-five".