40881396 has 48 divisors (see below), whose sum is σ = 105404544. Its totient is φ = 12266496.

The previous prime is 40881377. The next prime is 40881397. The reversal of 40881396 is 69318804.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40881397) 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, 336 + ... + 9048.

It is an arithmetic number, because the mean of its divisors is an integer number (2195928).

Almost surely, 2^40881396 is an apocalyptic number.

40881396 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40881396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52702272).

40881396 is an abundant number, since it is smaller than the sum of its proper divisors (64523148).

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

40881396 is a wasteful number, since it uses less digits than its factorization.

40881396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8760 (or 8758 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 40881396 is about 6393.8561134889. The cubic root of 40881396 is about 344.4889050559.

The spelling of 40881396 in words is "forty million, eight hundred eighty-one thousand, three hundred ninety-six".