40455430 has 32 divisors (see below), whose sum is σ = 76235904. Its totient is φ = 15440256.

The previous prime is 40455421. The next prime is 40455431. The reversal of 40455430 is 3455404.

It is a junction number, because it is equal to n+sod(n) for n = 40455395 and 40455404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40455431) 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, 18579 + ... + 20641.

It is an arithmetic number, because the mean of its divisors is an integer number (2382372).

Almost surely, 2^40455430 is an apocalyptic number.

40455430 is a deficient number, since it is larger than the sum of its proper divisors (35780474).

40455430 is a wasteful number, since it uses less digits than its factorization.

40455430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2160.

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 40455430 is about 6360.4583168196. The cubic root of 40455430 is about 343.2882514303.

The spelling of 40455430 in words is "forty million, four hundred fifty-five thousand, four hundred thirty".