40981456 has 10 divisors (see below), whose sum is σ = 79401602. Its totient is φ = 20490720.

The previous prime is 40981453. The next prime is 40981481. The reversal of 40981456 is 65418904.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 26419600 + 14561856 = 5140^2 + 3816^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40981453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1280655 + ... + 1280686.

Almost surely, 2^40981456 is an apocalyptic number.

It is an amenable number.

40981456 is a deficient number, since it is larger than the sum of its proper divisors (38420146).

40981456 is a wasteful number, since it uses less digits than its factorization.

40981456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2561349 (or 2561343 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 40981456 is about 6401.6760305408. The cubic root of 40981456 is about 344.7697294177.

The spelling of 40981456 in words is "forty million, nine hundred eighty-one thousand, four hundred fifty-six".