40451966 has 16 divisors (see below), whose sum is σ = 62101728. Its totient is φ = 19756800.

The previous prime is 40451947. The next prime is 40451981. The reversal of 40451966 is 66915404.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14786 + ... + 17306.

It is an arithmetic number, because the mean of its divisors is an integer number (3881358).

Almost surely, 2^40451966 is an apocalyptic number.

40451966 is a deficient number, since it is larger than the sum of its proper divisors (21649762).

40451966 is a wasteful number, since it uses less digits than its factorization.

40451966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2707.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 40451966 is about 6360.1860035694. The cubic root of 40451966 is about 343.2784531211.

The spelling of 40451966 in words is "forty million, four hundred fifty-one thousand, nine hundred sixty-six".