40430055 has 8 divisors (see below), whose sum is σ = 64688112. Its totient is φ = 21562688.

The previous prime is 40430051. The next prime is 40430077. The reversal of 40430055 is 55003404.

It is a happy number.

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 40430055 - 2² = 40430051 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40430051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1347654 + ... + 1347683.

It is an arithmetic number, because the mean of its divisors is an integer number (8086014).

Almost surely, 2^40430055 is an apocalyptic number.

40430055 is a deficient number, since it is larger than the sum of its proper divisors (24258057).

40430055 is a wasteful number, since it uses less digits than its factorization.

40430055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2695345.

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 40430055 is about 6358.4632577377. The cubic root of 40430055 is about 343.2164624576.

Adding to 40430055 its reverse (55003404), we get a palindrome (95433459).

The spelling of 40430055 in words is "forty million, four hundred thirty thousand, fifty-five".