40000261 has 8 divisors (see below), whose sum is σ = 47189504. Its totient is φ = 33179760.

The previous prime is 40000253. The next prime is 40000271. The reversal of 40000261 is 16200004.

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 40000261 - 2³ = 40000253 is a prime.

It is a super-3 number, since 3×40000261³ (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 (40000211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91950 + ... + 92383.

It is an arithmetic number, because the mean of its divisors is an integer number (5898688).

Almost surely, 2^40000261 is an apocalyptic number.

It is an amenable number.

40000261 is a deficient number, since it is larger than the sum of its proper divisors (7189243).

40000261 is a wasteful number, since it uses less digits than its factorization.

40000261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184371.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 40000261 is about 6324.5759541648. The cubic root of 40000261 is about 341.9959331733.

Adding to 40000261 its reverse (16200004), we get a palindrome (56200265).

The spelling of 40000261 in words is "forty million, two hundred sixty-one", and thus it is an aban number.