40020459 has 8 divisors (see below), whose sum is σ = 54367632. Its totient is φ = 26176800.

The previous prime is 40020457. The next prime is 40020481. The reversal of 40020459 is 95402004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40020459 - 2¹ = 40020457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40020451) 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, 125692 + ... + 126009.

It is an arithmetic number, because the mean of its divisors is an integer number (6795954).

Almost surely, 2^40020459 is an apocalyptic number.

40020459 is a deficient number, since it is larger than the sum of its proper divisors (14347173).

40020459 is a wasteful number, since it uses less digits than its factorization.

40020459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251757.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 40020459 is about 6326.1725395376. The cubic root of 40020459 is about 342.0534867271.

The spelling of 40020459 in words is "forty million, twenty thousand, four hundred fifty-nine".