40277905 has 4 divisors (see below), whose sum is σ = 48333492. Its totient is φ = 32222320.

The previous prime is 40277869. The next prime is 40277927. The reversal of 40277905 is 50977204.

40277905 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 30393169 + 9884736 = 5513^2 + 3144^2 .

It is not a de Polignac number, because 40277905 - 2¹¹ = 40275857 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4027786 + ... + 4027795.

It is an arithmetic number, because the mean of its divisors is an integer number (12083373).

Almost surely, 2^40277905 is an apocalyptic number.

It is an amenable number.

40277905 is a deficient number, since it is larger than the sum of its proper divisors (8055587).

40277905 is an equidigital number, since it uses as much as digits as its factorization.

40277905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8055586.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 40277905 is about 6346.4876112697. The cubic root of 40277905 is about 342.7853802766.

The spelling of 40277905 in words is "forty million, two hundred seventy-seven thousand, nine hundred five".