40769 has 4 divisors (see below), whose sum is σ = 41520. Its totient is φ = 40020.

The previous prime is 40763. The next prime is 40771. The reversal of 40769 is 96704.

40769 is nontrivially palindromic in base 14.

40769 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-40769 is a prime.

It is a super-2 number, since 2×40769² = 3324222722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40763) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 287 + ... + 404.

It is an arithmetic number, because the mean of its divisors is an integer number (10380).

2⁴⁰⁷⁶⁹ is an apocalyptic number.

It is an amenable number.

40769 is a deficient number, since it is larger than the sum of its proper divisors (751).

40769 is an equidigital number, since it uses as much as digits as its factorization.

40769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 750.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 40769 is about 201.9133477510. The cubic root of 40769 is about 34.4172911989.

The spelling of 40769 in words is "forty thousand, seven hundred sixty-nine".