40071746 has 16 divisors (see below), whose sum is σ = 70616448. Its totient is φ = 16813200.

The previous prime is 40071701. The next prime is 40071749. The reversal of 40071746 is 64717004.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (40071749) 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 7 ways as a sum of consecutive naturals, for example, 69770 + ... + 70341.

It is an arithmetic number, because the mean of its divisors is an integer number (4413528).

Almost surely, 2^40071746 is an apocalyptic number.

40071746 is a deficient number, since it is larger than the sum of its proper divisors (30544702).

40071746 is a wasteful number, since it uses less digits than its factorization.

40071746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140137.

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 40071746 is about 6330.2247985360. The cubic root of 40071746 is about 342.1995404297.

The spelling of 40071746 in words is "forty million, seventy-one thousand, seven hundred forty-six".