40865045 has 24 divisors (see below), whose sum is σ = 53639496. Its totient is φ = 29872128.

The previous prime is 40865039. The next prime is 40865051. The reversal of 40865045 is 54056804.

It is an interprime number because it is at equal distance from previous prime (40865039) and next prime (40865051).

It can be written as a sum of positive squares in 12 ways, for example, as 23367556 + 17497489 = 4834^2 + 4183^2 .

It is not a de Polignac number, because 40865045 - 2¹⁶ = 40799509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 115589 + ... + 115941.

It is an arithmetic number, because the mean of its divisors is an integer number (2234979).

Almost surely, 2^40865045 is an apocalyptic number.

It is an amenable number.

40865045 is a deficient number, since it is larger than the sum of its proper divisors (12774451).

40865045 is a wasteful number, since it uses less digits than its factorization.

40865045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521 (or 508 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 32.

The square root of 40865045 is about 6392.5773362549. The cubic root of 40865045 is about 344.4429714548.

The spelling of 40865045 in words is "forty million, eight hundred sixty-five thousand, forty-five".