40947564 has 24 divisors (see below), whose sum is σ = 109193728. Its totient is φ = 11699280.

The previous prime is 40947563. The next prime is 40947581. The reversal of 40947564 is 46574904.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (40947563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243652 + ... + 243819.

Almost surely, 2^40947564 is an apocalyptic number.

It is an amenable number.

40947564 is an abundant number, since it is smaller than the sum of its proper divisors (68246164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40947564 is a wasteful number, since it uses less digits than its factorization.

40947564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487485 (or 487483 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 39.

The square root of 40947564 is about 6399.0283637440. The cubic root of 40947564 is about 344.6746607413.

The spelling of 40947564 in words is "forty million, nine hundred forty-seven thousand, five hundred sixty-four".