40395405 has 16 divisors (see below), whose sum is σ = 66862080. Its totient is φ = 20801088.

The previous prime is 40395343. The next prime is 40395413. The reversal of 40395405 is 50459304.

It is not a de Polignac number, because 40395405 - 2¹⁰ = 40394381 is a prime.

It is a super-2 number, since 2×40395405² = 3263577490228050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45997 + ... + 46866.

It is an arithmetic number, because the mean of its divisors is an integer number (4178880).

Almost surely, 2^40395405 is an apocalyptic number.

It is an amenable number.

40395405 is a deficient number, since it is larger than the sum of its proper divisors (26466675).

40395405 is a wasteful number, since it uses less digits than its factorization.

40395405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92900.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 40395405 is about 6355.7379587267. The cubic root of 40395405 is about 343.1183848480.

The spelling of 40395405 in words is "forty million, three hundred ninety-five thousand, four hundred five".