40054459 has 4 divisors (see below), whose sum is σ = 40138560. Its totient is φ = 39970360.

The previous prime is 40054453. The next prime is 40054471. The reversal of 40054459 is 95445004.

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 40054459 - 2⁹ = 40053947 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40054459.

It is not an unprimeable number, because it can be changed into a prime (40054453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41332 + ... + 42289.

It is an arithmetic number, because the mean of its divisors is an integer number (10034640).

Almost surely, 2^40054459 is an apocalyptic number.

40054459 is a deficient number, since it is larger than the sum of its proper divisors (84101).

40054459 is an equidigital number, since it uses as much as digits as its factorization.

40054459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84100.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 40054459 is about 6328.8592179002. The cubic root of 40054459 is about 342.1503249190.

It can be divided in two parts, 4005 and 4459, that added together give a square (8464 = 92²).

The spelling of 40054459 in words is "forty million, fifty-four thousand, four hundred fifty-nine".