40947456 has 144 divisors (see below), whose sum is σ = 123032448. Its totient is φ = 11980800.

The previous prime is 40947443. The next prime is 40947457. The reversal of 40947456 is 65474904.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40947457) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 312511 + ... + 312641.

It is an arithmetic number, because the mean of its divisors is an integer number (854392).

Almost surely, 2^40947456 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40947456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61516224).

40947456 is an abundant number, since it is smaller than the sum of its proper divisors (82084992).

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

40947456 is a wasteful number, since it uses less digits than its factorization.

40947456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198 (or 184 counting only the distinct ones).

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

The square root of 40947456 is about 6399.0199249573. The cubic root of 40947456 is about 344.6743577123.

The spelling of 40947456 in words is "forty million, nine hundred forty-seven thousand, four hundred fifty-six".