40400133 has 8 divisors (see below), whose sum is σ = 53948448. Its totient is φ = 26892624.

The previous prime is 40400131. The next prime is 40400141. The reversal of 40400133 is 33100404.

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

It is not a de Polignac number, because 40400133 - 2¹ = 40400131 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40400131) 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 7 ways as a sum of consecutive naturals, for example, 7810 + ... + 11907.

It is an arithmetic number, because the mean of its divisors is an integer number (6743556).

Almost surely, 2^40400133 is an apocalyptic number.

It is an amenable number.

40400133 is a deficient number, since it is larger than the sum of its proper divisors (13548315).

40400133 is a wasteful number, since it uses less digits than its factorization.

40400133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20403.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 40400133 is about 6356.1098952111. The cubic root of 40400133 is about 343.1317708625.

Adding to 40400133 its reverse (33100404), we get a palindrome (73500537).

The spelling of 40400133 in words is "forty million, four hundred thousand, one hundred thirty-three".