40143349 has 8 divisors (see below), whose sum is σ = 42023232. Its totient is φ = 38274720.

The previous prime is 40143347. The next prime is 40143373. The reversal of 40143349 is 94334104.

40143349 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 40143349 - 2¹ = 40143347 is a prime.

It is a super-2 number, since 2×40143349² = 3222976937871602, which contains 22 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 (40143343) 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 7 ways as a sum of consecutive naturals, for example, 4977 + ... + 10249.

It is an arithmetic number, because the mean of its divisors is an integer number (5252904).

Almost surely, 2^40143349 is an apocalyptic number.

It is an amenable number.

40143349 is a deficient number, since it is larger than the sum of its proper divisors (1879883).

40143349 is a wasteful number, since it uses less digits than its factorization.

40143349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5627.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 40143349 is about 6335.8779186471. The cubic root of 40143349 is about 342.4032411776.

The spelling of 40143349 in words is "forty million, one hundred forty-three thousand, three hundred forty-nine".