40406746 has 16 divisors (see below), whose sum is σ = 62110080. Its totient is φ = 19706400.

The previous prime is 40406687. The next prime is 40406747. The reversal of 40406746 is 64760404.

40406746 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (40406747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37921 + ... + 38971.

It is an arithmetic number, because the mean of its divisors is an integer number (3881880).

Almost surely, 2^40406746 is an apocalyptic number.

40406746 is a deficient number, since it is larger than the sum of its proper divisors (21703334).

40406746 is a wasteful number, since it uses less digits than its factorization.

40406746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1509.

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 40406746 is about 6356.6300820482. The cubic root of 40406746 is about 343.1504919775.

The spelling of 40406746 in words is "forty million, four hundred six thousand, seven hundred forty-six".