40099693 has 8 divisors (see below), whose sum is σ = 41333600. Its totient is φ = 38879568.

The previous prime is 40099691. The next prime is 40099699. The reversal of 40099693 is 39699004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40099693 - 2¹ = 40099691 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40099691) 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 7 ways as a sum of consecutive naturals, for example, 2623 + ... + 9331.

It is an arithmetic number, because the mean of its divisors is an integer number (5166700).

Almost surely, 2^40099693 is an apocalyptic number.

40099693 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

It is an amenable number.

40099693 is a deficient number, since it is larger than the sum of its proper divisors (1233907).

40099693 is a wasteful number, since it uses less digits than its factorization.

40099693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6891.

The product of its (nonzero) digits is 52488, while the sum is 40.

The square root of 40099693 is about 6332.4318393489. The cubic root of 40099693 is about 342.2790746744.

Subtracting from 40099693 its reverse (39699004), we obtain a square (400689 = 633²).

The spelling of 40099693 in words is "forty million, ninety-nine thousand, six hundred ninety-three".