40405796 has 24 divisors (see below), whose sum is σ = 72270240. Its totient is φ = 19760832.

The previous prime is 40405793. The next prime is 40405843. The reversal of 40405796 is 69750404.

It is not an unprimeable number, because it can be changed into a prime (40405793) 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, 73595 + ... + 74141.

It is an arithmetic number, because the mean of its divisors is an integer number (3011260).

Almost surely, 2^40405796 is an apocalyptic number.

It is an amenable number.

40405796 is a deficient number, since it is larger than the sum of its proper divisors (31864444).

40405796 is a wasteful number, since it uses less digits than its factorization.

40405796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 923 (or 921 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 40405796 is about 6356.5553564804. Note that the first 3 decimals coincide. The cubic root of 40405796 is about 343.1478026945.

The spelling of 40405796 in words is "forty million, four hundred five thousand, seven hundred ninety-six".