41661390 has 32 divisors (see below), whose sum is σ = 105870240. Its totient is φ = 10456064.

The previous prime is 41661383. The next prime is 41661391. The reversal of 41661390 is 9316614.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41661391) 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 15 ways as a sum of consecutive naturals, for example, 40335 + ... + 41354.

It is an arithmetic number, because the mean of its divisors is an integer number (3308445).

Almost surely, 2^41661390 is an apocalyptic number.

41661390 is an abundant number, since it is smaller than the sum of its proper divisors (64208850).

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

41661390 is a wasteful number, since it uses less digits than its factorization.

41661390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81716.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 41661390 is about 6454.5635018954. The cubic root of 41661390 is about 346.6660020122. Note that the first 3 decimals are identical.

The spelling of 41661390 in words is "forty-one million, six hundred sixty-one thousand, three hundred ninety".