40212679 has 4 divisors (see below), whose sum is σ = 43305976. Its totient is φ = 37119384.

The previous prime is 40212661. The next prime is 40212713. The reversal of 40212679 is 97621204.

40212679 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 a cyclic number.

It is not a de Polignac number, because 40212679 - 2⁹ = 40212167 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40212679.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40212619) 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, 1546629 + ... + 1546654.

It is an arithmetic number, because the mean of its divisors is an integer number (10826494).

Almost surely, 2^40212679 is an apocalyptic number.

40212679 is a deficient number, since it is larger than the sum of its proper divisors (3093297).

40212679 is a wasteful number, since it uses less digits than its factorization.

40212679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3093296.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 40212679 is about 6341.3467812445. The cubic root of 40212679 is about 342.6002448679.

The spelling of 40212679 in words is "forty million, two hundred twelve thousand, six hundred seventy-nine".