40612791 has 16 divisors (see below), whose sum is σ = 55797984. Its totient is φ = 26256384.

The previous prime is 40612783. The next prime is 40612811. The reversal of 40612791 is 19721604.

It is a happy number.

It is not a de Polignac number, because 40612791 - 2³ = 40612783 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40612721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65515 + ... + 66131.

It is an arithmetic number, because the mean of its divisors is an integer number (3487374).

Almost surely, 2^40612791 is an apocalyptic number.

40612791 is a deficient number, since it is larger than the sum of its proper divisors (15185193).

40612791 is a wasteful number, since it uses less digits than its factorization.

40612791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1250.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 40612791 is about 6372.8165672644. The cubic root of 40612791 is about 343.7327759524.

The spelling of 40612791 in words is "forty million, six hundred twelve thousand, seven hundred ninety-one".