40396896 has 144 divisors (see below), whose sum is σ = 125483904. Its totient is φ = 12275712.

The previous prime is 40396891. The next prime is 40396897. The reversal of 40396896 is 69869304.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40396891) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 181041 + ... + 181263.

It is an arithmetic number, because the mean of its divisors is an integer number (871416).

Almost surely, 2^40396896 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 40396896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62741952).

40396896 is an abundant number, since it is smaller than the sum of its proper divisors (85087008).

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

40396896 is a wasteful number, since it uses less digits than its factorization.

40396896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293 (or 282 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The square root of 40396896 is about 6355.8552532291. The cubic root of 40396896 is about 343.1226063117.

The spelling of 40396896 in words is "forty million, three hundred ninety-six thousand, eight hundred ninety-six".