40816906 has 16 divisors (see below), whose sum is σ = 66866688. Its totient is φ = 18572400.

The previous prime is 40816901. The next prime is 40816907. The reversal of 40816906 is 60961804.

It is a super-4 number, since 4×40816906⁴ (a number of 32 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (40816901) 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, 9210 + ... + 12901.

It is an arithmetic number, because the mean of its divisors is an integer number (4179168).

Almost surely, 2^40816906 is an apocalyptic number.

40816906 is a deficient number, since it is larger than the sum of its proper divisors (26049782).

40816906 is a wasteful number, since it uses less digits than its factorization.

40816906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22197.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 40816906 is about 6388.8110004914. The cubic root of 40816906 is about 344.3076671025.

The spelling of 40816906 in words is "forty million, eight hundred sixteen thousand, nine hundred six".