40857349 has 8 divisors (see below), whose sum is σ = 45420032. Its totient is φ = 36497520.

The previous prime is 40857347. The next prime is 40857359. The reversal of 40857349 is 94375804.

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

It is a cyclic number.

It is not a de Polignac number, because 40857349 - 2¹ = 40857347 is a prime.

It is a super-3 number, since 3×40857349³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40857343) 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, 50289 + ... + 51094.

It is an arithmetic number, because the mean of its divisors is an integer number (5677504).

Almost surely, 2^40857349 is an apocalyptic number.

It is an amenable number.

40857349 is a deficient number, since it is larger than the sum of its proper divisors (4562683).

40857349 is a wasteful number, since it uses less digits than its factorization.

40857349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101427.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 40857349 is about 6391.9753597773. The cubic root of 40857349 is about 344.4213474357.

The spelling of 40857349 in words is "forty million, eight hundred fifty-seven thousand, three hundred forty-nine".