40055430 has 32 divisors (see below), whose sum is σ = 96300000. Its totient is φ = 10662912.

The previous prime is 40055369. The next prime is 40055437. The reversal of 40055430 is 3455004.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 40055397 and 40055406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40055437) 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, 31446 + ... + 32694.

It is an arithmetic number, because the mean of its divisors is an integer number (3009375).

Almost surely, 2^40055430 is an apocalyptic number.

40055430 is an abundant number, since it is smaller than the sum of its proper divisors (56244570).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40055430 is a wasteful number, since it uses less digits than its factorization.

40055430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2328.

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

The square root of 40055430 is about 6328.9359295224. The cubic root of 40055430 is about 342.1530896988.

The spelling of 40055430 in words is "forty million, fifty-five thousand, four hundred thirty".