40654219 has 4 divisors (see below), whose sum is σ = 40816440. Its totient is φ = 40492000.

The previous prime is 40654213. The next prime is 40654241. The reversal of 40654219 is 91245604.

40654219 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40654219 - 2⁹ = 40653707 is a prime.

It is a super-2 number, since 2×40654219² = 3305531044999922, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (40654213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80734 + ... + 81235.

It is an arithmetic number, because the mean of its divisors is an integer number (10204110).

Almost surely, 2^40654219 is an apocalyptic number.

40654219 is a deficient number, since it is larger than the sum of its proper divisors (162221).

40654219 is a wasteful number, since it uses less digits than its factorization.

40654219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162220.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 40654219 is about 6376.0661069346. The cubic root of 40654219 is about 343.8496137091.

The spelling of 40654219 in words is "forty million, six hundred fifty-four thousand, two hundred nineteen".