40056693 has 32 divisors (see below), whose sum is σ = 58713600. Its totient is φ = 24204096.

The previous prime is 40056691. The next prime is 40056697. The reversal of 40056693 is 39665004.

It is a happy number.

It is not a de Polignac number, because 40056693 - 2¹ = 40056691 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40056691) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 144471 + ... + 144747.

It is an arithmetic number, because the mean of its divisors is an integer number (1834800).

Almost surely, 2^40056693 is an apocalyptic number.

40056693 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

It is an amenable number.

40056693 is a deficient number, since it is larger than the sum of its proper divisors (18656907).

40056693 is a wasteful number, since it uses less digits than its factorization.

40056693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401.

The product of its (nonzero) digits is 19440, while the sum is 33.

The square root of 40056693 is about 6329.0357085420. The cubic root of 40056693 is about 342.1566858389.

The spelling of 40056693 in words is "forty million, fifty-six thousand, six hundred ninety-three".