40277645 has 8 divisors (see below), whose sum is σ = 49639704. Its totient is φ = 31351104.

The previous prime is 40277603. The next prime is 40277647. The reversal of 40277645 is 54677204.

40277645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3541924 + 36735721 = 1882^2 + 6061^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40277645 - 2⁸ = 40277389 is a prime.

It is a super-3 number, since 3×40277645³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40277647) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 108674 + ... + 109043.

It is an arithmetic number, because the mean of its divisors is an integer number (6204963).

Almost surely, 2^40277645 is an apocalyptic number.

It is an amenable number.

40277645 is a deficient number, since it is larger than the sum of its proper divisors (9362059).

40277645 is a wasteful number, since it uses less digits than its factorization.

40277645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217759.

The product of its (nonzero) digits is 47040, while the sum is 35.

The square root of 40277645 is about 6346.4671274655. The cubic root of 40277645 is about 342.7846426977.

The spelling of 40277645 in words is "forty million, two hundred seventy-seven thousand, six hundred forty-five".