40393069 has 8 divisors (see below), whose sum is σ = 43424640. Its totient is φ = 37452096.

The previous prime is 40393063. The next prime is 40393079. The reversal of 40393069 is 96039304.

40393069 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 a de Polignac number, because none of the positive numbers 2^k-40393069 is a prime.

It is a super-2 number, since 2×40393069² = 3263200046477522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40393063) 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, 21724 + ... + 23509.

It is an arithmetic number, because the mean of its divisors is an integer number (5428080).

Almost surely, 2^40393069 is an apocalyptic number.

It is an amenable number.

40393069 is a deficient number, since it is larger than the sum of its proper divisors (3031571).

40393069 is a wasteful number, since it uses less digits than its factorization.

40393069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45299.

The product of its (nonzero) digits is 17496, while the sum is 34.

The square root of 40393069 is about 6355.5541851203. The cubic root of 40393069 is about 343.1117707294. Note that the first 3 decimals are identical.

The spelling of 40393069 in words is "forty million, three hundred ninety-three thousand, sixty-nine".