40861338 has 64 divisors (see below), whose sum is σ = 97493760. Its totient is φ = 11174400.

The previous prime is 40861307. The next prime is 40861339. The reversal of 40861338 is 83316804.

It is a junction number, because it is equal to n+sod(n) for n = 40861299 and 40861308.

It is not an unprimeable number, because it can be changed into a prime (40861339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 104848 + ... + 105236.

It is an arithmetic number, because the mean of its divisors is an integer number (1523340).

Almost surely, 2^40861338 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40861338, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48746880).

40861338 is an abundant number, since it is smaller than the sum of its proper divisors (56632422).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40861338 is a wasteful number, since it uses less digits than its factorization.

40861338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 40861338 is about 6392.2873840277. The cubic root of 40861338 is about 344.4325559623.

The spelling of 40861338 in words is "forty million, eight hundred sixty-one thousand, three hundred thirty-eight".