40869387 has 16 divisors (see below), whose sum is σ = 65205280. Its totient is φ = 25150176.

The previous prime is 40869373. The next prime is 40869403. The reversal of 40869387 is 78396804.

It is a happy number.

It is not a de Polignac number, because 40869387 - 2⁴ = 40869371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40869317) 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, 57868 + ... + 58569.

It is an arithmetic number, because the mean of its divisors is an integer number (4075330).

Almost surely, 2^40869387 is an apocalyptic number.

40869387 is a deficient number, since it is larger than the sum of its proper divisors (24335893).

40869387 is a wasteful number, since it uses less digits than its factorization.

40869387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116459 (or 116453 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 40869387 is about 6392.9169398640. The cubic root of 40869387 is about 344.4551702946.

The spelling of 40869387 in words is "forty million, eight hundred sixty-nine thousand, three hundred eighty-seven".