40854381 has 8 divisors (see below), whose sum is σ = 54505440. Its totient is φ = 27219792.

The previous prime is 40854367. The next prime is 40854397. The reversal of 40854381 is 18345804.

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

It is not a de Polignac number, because 40854381 - 2¹⁰ = 40853357 is a prime.

It is a super-2 number, since 2×40854381² = 3338160893786322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40854481) 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, 3910 + ... + 9848.

It is an arithmetic number, because the mean of its divisors is an integer number (6813180).

Almost surely, 2^40854381 is an apocalyptic number.

It is an amenable number.

40854381 is a deficient number, since it is larger than the sum of its proper divisors (13651059).

40854381 is a wasteful number, since it uses less digits than its factorization.

40854381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8235.

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 40854381 is about 6391.7431894594. The cubic root of 40854381 is about 344.4130073016.

The spelling of 40854381 in words is "forty million, eight hundred fifty-four thousand, three hundred eighty-one".