40707689 has 4 divisors (see below), whose sum is σ = 44408400. Its totient is φ = 37006980.

The previous prime is 40707661. The next prime is 40707697. The reversal of 40707689 is 98670704.

40707689 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40707689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40707389) 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 3 ways as a sum of consecutive naturals, for example, 1850339 + ... + 1850360.

It is an arithmetic number, because the mean of its divisors is an integer number (11102100).

Almost surely, 2^40707689 is an apocalyptic number.

It is an amenable number.

40707689 is a deficient number, since it is larger than the sum of its proper divisors (3700711).

40707689 is a wasteful number, since it uses less digits than its factorization.

40707689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3700710.

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 40707689 is about 6380.2577534140. The cubic root of 40707689 is about 344.0002957677. Note that the first 3 decimals are identical.

The spelling of 40707689 in words is "forty million, seven hundred seven thousand, six hundred eighty-nine".