40769643 has 4 divisors (see below), whose sum is σ = 54359528. Its totient is φ = 27179760.

The previous prime is 40769629. The next prime is 40769647. The reversal of 40769643 is 34696704.

40769643 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.

It is not a de Polignac number, because 40769643 - 2¹⁴ = 40753259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40769647) 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, 6794938 + ... + 6794943.

It is an arithmetic number, because the mean of its divisors is an integer number (13589882).

Almost surely, 2^40769643 is an apocalyptic number.

40769643 is a deficient number, since it is larger than the sum of its proper divisors (13589885).

40769643 is a wasteful number, since it uses less digits than its factorization.

40769643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13589884.

The product of its (nonzero) digits is 108864, while the sum is 39.

The square root of 40769643 is about 6385.1110405380. Note that the first 3 decimals coincide. The cubic root of 40769643 is about 344.1747213872.

The spelling of 40769643 in words is "forty million, seven hundred sixty-nine thousand, six hundred forty-three".