40694533 has 8 divisors (see below), whose sum is σ = 44446176. Its totient is φ = 36951600.

The previous prime is 40694531. The next prime is 40694539. The reversal of 40694533 is 33549604.

It is a happy number.

40694533 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 40694533 - 2¹ = 40694531 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 (40694531) 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 7 ways as a sum of consecutive naturals, for example, 11203 + ... + 14383.

It is an arithmetic number, because the mean of its divisors is an integer number (5555772).

Almost surely, 2^40694533 is an apocalyptic number.

It is an amenable number.

40694533 is a deficient number, since it is larger than the sum of its proper divisors (3751643).

40694533 is a wasteful number, since it uses less digits than its factorization.

40694533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4355.

The product of its (nonzero) digits is 38880, while the sum is 34.

The square root of 40694533 is about 6379.2266772705. The cubic root of 40694533 is about 343.9632335187.

Subtracting from 40694533 its reverse (33549604), we obtain a square (7144929 = 2673²).

The spelling of 40694533 in words is "forty million, six hundred ninety-four thousand, five hundred thirty-three".