40456646 has 4 divisors (see below), whose sum is σ = 60684972. Its totient is φ = 20228322.

The previous prime is 40456639. The next prime is 40456657. The reversal of 40456646 is 64665404.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10114160 + ... + 10114163.

It is an arithmetic number, because the mean of its divisors is an integer number (15171243).

Almost surely, 2^40456646 is an apocalyptic number.

40456646 is a deficient number, since it is larger than the sum of its proper divisors (20228326).

40456646 is a wasteful number, since it uses less digits than its factorization.

40456646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20228325.

The product of its (nonzero) digits is 69120, while the sum is 35.

The square root of 40456646 is about 6360.5539066971. The cubic root of 40456646 is about 343.2916908890.

The spelling of 40456646 in words is "forty million, four hundred fifty-six thousand, six hundred forty-six".