40409733 has 16 divisors (see below), whose sum is σ = 66313856. Its totient is φ = 21314880.

The previous prime is 40409729. The next prime is 40409753. The reversal of 40409733 is 33790404.

It is not a de Polignac number, because 40409733 - 2² = 40409729 is a prime.

It is a super-2 number, since 2×40409733² = 3265893042262578, which contains 22 as substring.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 40409733.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40409753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73738 + ... + 74283.

It is an arithmetic number, because the mean of its divisors is an integer number (4144616).

Almost surely, 2^40409733 is an apocalyptic number.

It is an amenable number.

40409733 is a deficient number, since it is larger than the sum of its proper divisors (25904123).

40409733 is a wasteful number, since it uses less digits than its factorization.

40409733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148044.

The product of its (nonzero) digits is 9072, while the sum is 30.

The square root of 40409733 is about 6356.8650292420. The cubic root of 40409733 is about 343.1589473747.

The spelling of 40409733 in words is "forty million, four hundred nine thousand, seven hundred thirty-three".