40808355 has 16 divisors (see below), whose sum is σ = 74621184. Its totient is φ = 18655200.

The previous prime is 40808351. The next prime is 40808359. The reversal of 40808355 is 55380804.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (40808351) and next prime (40808359).

It is not a de Polignac number, because 40808355 - 2² = 40808351 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40808351) 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, 194221 + ... + 194430.

It is an arithmetic number, because the mean of its divisors is an integer number (4663824).

Almost surely, 2^40808355 is an apocalyptic number.

40808355 is a deficient number, since it is larger than the sum of its proper divisors (33812829).

40808355 is a wasteful number, since it uses less digits than its factorization.

40808355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388666.

The product of its (nonzero) digits is 19200, while the sum is 33.

The square root of 40808355 is about 6388.1417485839. The cubic root of 40808355 is about 344.2836216700.

The spelling of 40808355 in words is "forty million, eight hundred eight thousand, three hundred fifty-five".